JP6011694B2 - Mathematical expression display control apparatus and program - Google Patents

Description

  The present invention relates to a mathematical expression input device and a program.

  2. Description of the Related Art Conventionally, in mathematical expression input devices such as scientific calculators, a plurality of inputted mathematical formula components can be copied separately and saved on a clipboard, and desired mathematical formula components can be pasted (for example, patents). Reference 1). More specifically, in the technique described in Patent Document 1, the copied mathematical formula component is stored in association with a number, and when the user designates a number, the mathematical formula component corresponding to the designated number is moved to the cursor. Paste to the position.

JP-A-4-252231

  However, in the technique described in Patent Document 1, since it is necessary for the user to remember the correspondence between the contents of the stored mathematical expression components and their numbers or to display them on the display once, the paste operation can be easily performed. Can not do.

  An object of the present invention is to provide a mathematical expression input device and a program capable of easily pasting a plurality of copied mathematical formula components.

In order to solve the above problems, the invention according to claim 1 is a mathematical expression display control device,
And formulas display means for displaying the number equation,
Based on a user operation above, and any of formulas components in equation displayed by the mathematical expression display means, specifying the one color among the plurality of colors, the front SL specified by the formula components Formula / color correspondence storage control means for performing control to store the specified color in association with each other;
Of the mathematical formulas displayed on the mathematical formula display means, a mathematical formula part color identification display control means for identifying and displaying the designated mathematical formula component in the designated color;
In response to a user operation, any one of the colors stored in association with the formula component is designated as the designated color by the formula / color correspondence storage control means, and any position displayed by the formula display means is designated. designated as position result, an identification displayed mathematical expression components in the same color as the designated color by the equation partial color identifying display control means, and color formulas portion sticking means you paste to the designated position,
It is characterized by providing.

  According to the present invention, a plurality of copied mathematical formula components can be easily pasted.

It is a top view which shows schematic structure of a scientific calculator. It is a block diagram which shows the function structure of a scientific calculator. It is a figure which shows the copy buffer classified by color. It is a flowchart which shows the flow of a calculation process. It is a figure which shows the display content of a display. It is a figure which shows the display content of a display. It is a figure which shows the display content of a display. It is a figure which shows the display content of a display. It is a figure which shows the copy buffer classified by color in 2nd Embodiment. It is a flowchart which shows the flow of the calculation process in 2nd Embodiment. It is a figure which shows the display content of a display. It is a figure which shows the display content of a display. It is a figure which shows the display content of a display. It is a figure which shows the display content of a display.

  Hereinafter, an example of an embodiment according to the present invention will be described in detail with reference to the accompanying drawings. However, the scope of the invention is not limited to the illustrated examples.

[1. First Embodiment]
First, the configuration of the electronic device in the first embodiment will be described.

[1.1 External configuration]
FIG. 1 is a plan view showing a schematic configuration of a scientific calculator 1 to which an electronic apparatus according to the present invention is applied.
As shown in the figure, the scientific calculator 1 includes an input key group 2 having various key groups and a display 3.

  The input key group 2 is a key group for receiving an input operation of a mathematical expression component such as a numerical value or an arithmetic symbol from a user or an instruction operation of various processes, and a plurality of keys each assigned a unique function. Has a key. In the present embodiment, the input key group 2 includes a numeric keypad 20, an operation symbol key 21, a cursor key 22, an EXE key 23, a DEL key 24, and the like.

  Among these, the numeric keypad 20 is a key for receiving a numerical input operation, and the operation symbol key 21 is a key for receiving an input operation such as an arithmetic operation operator or parentheses.

  The cursor key 22 is a key that is pressed when the cursor indicating the editing target position or the selection target position is moved in a predetermined direction in the display 3. In the present embodiment, the cursor key 22 is input in four directions, up, down, left, and right. It is configured to be possible.

  The EXE key 23 is a key that receives an input operation of a process execution instruction or a determination instruction. For example, after the mathematical expression is input, the EXE key 23 functions as a key that instructs the execution of the arithmetic process. The DEL key 24 is a key for receiving a deletion operation such as a numerical value or a calculation symbol displayed on the display 3.

  The display 3 is composed of an LCD (Liquid Crystal Display), an ELD (Electronic Luminescent Display), etc. In addition to characters, symbols, mathematical formulas, calculation results, etc. according to the operation of the input key group 2, the scientific calculator 1 is provided. Various data necessary for use is displayed. Note that the display 3 in the present embodiment is integrally provided with a touch panel 30 over the entire display screen.

[1.2 Functional configuration]
Next, the functional configuration of the scientific calculator 1 will be described.
FIG. 2 is a block diagram illustrating a schematic functional configuration of the scientific calculator 1.

  As shown in FIG. 1, the scientific calculator 1 includes an input unit 14, a display unit 15, a RAM (Random Access Memory) 12, a storage unit 13, and a CPU (Central Processing Unit) 11. ing.

  The input unit 14 includes the input key group 2 and the touch panel 30 described above, and outputs an operation signal corresponding to the pressed key or the position of the touch panel 30 to the CPU 11.

  The display unit 15 includes the display 3 described above, and displays various types of information on the display 3 in accordance with display signals from the CPU 11.

  The RAM 12 is a volatile memory that temporarily stores information, and has a plurality of work areas that store various programs to be executed and data related to these various programs. For example, the RAM 12 in the present embodiment has a color-specific copy buffer 120 as a work area.

  As shown in FIG. 3, the color-specific copy buffer 120 stores, in association with any one of a plurality of colors, a mathematical expression component that is a copy target in a calculation process (see FIG. 4) described later. It is like that. Here, the mathematical expression component is a group of parts included in the mathematical expression, and may be composed of one symbol (including letters and numbers) or may be composed of two or more consecutive symbols. good.

  The storage unit 13 is a non-volatile memory composed of a ROM (Read Only Memory) or the like, and stores various programs and various data. Specifically, the storage unit 13 stores a calculation program 130 as a program according to the present invention.

  The calculation program 130 is a program for causing the CPU 11 to execute calculation processing (see FIG. 4) described later.

  The CPU 11 centrally controls each part of the scientific calculator 1. Specifically, the CPU 11 expands a program specified from the system program and various application programs stored in the storage unit 13 in the RAM 12 and performs various processes in cooperation with the program expanded in the RAM 12. Run.

[1.3 Operation of scientific calculator]
Next, the operation of the scientific calculator 1 will be described.

  FIG. 4 is a flowchart for explaining the operation of the calculation process. In this calculation process, when a user inputs a calculation process execution instruction via the input unit 14, the calculation program 130 is read from the storage unit 13 and appropriately expanded in the RAM 12. Is executed in cooperation with the CPU 11.

  As shown in this figure, in the calculation process, the CPU 11 first displays a color chart 31 (see FIG. 5) represented by each color in the color-specific copy buffer 120 on the display 3, and detects a user operation (step). S1), it is determined whether or not the detected user operation is a mathematical expression input operation (step S2). In this embodiment, the mathematical expression input operation includes a mathematical expression editing operation.

  When it is determined in step S2 that the user operation is a mathematical expression input operation (step S2; Yes), the CPU 11 inputs a mathematical formula component corresponding to the input operation at the cursor position of the display 3 and displays it (see FIG. Step S3).

  Next, the CPU 11 determines whether or not the formula component is stored in the color-specific copy buffer 120 (step S4). If it is determined that it is not stored (step S4; No), the process proceeds to step S1. To do.

  If it is determined in step S4 that the formula component part is stored in the color-specific copy buffer 120 (step S4; Yes), the CPU 11 identifies the color-coded formula component part (color-specific copy buffer 120). It is determined whether or not the cursor position (input position, edit position) is included in the mathematical expression component stored in (2), that is, whether or not the mathematical expression component including the cursor position is identified and displayed in color (step S5). ). Here, the expression component part is identified and displayed with a color in the present embodiment means that the expression component part is identified and displayed with any color in the color chart 31, and preferably the expression component part is displayed. This means that the marker is displayed in the color of the color chart 31. However, the formula component itself may be displayed in the color of the color chart 31, or the formula component may be displayed with an underline in the color of the color chart 31.

  When it is determined in step S5 that the cursor position (input position, edit position) is not included in the mathematical expression component that is identified and displayed in color (step S5; No), the CPU 11 extracts from the input mathematical expression. Each possible formula component is compared with each formula component stored in the color-specific copy buffer 120 (step S6).

  Next, the CPU 11 determines whether or not there is a common formula component in each formula component that can be extracted from the input formula and each formula component stored in the color-specific copy buffer 120 ( If it is determined in step S7) that it does not exist (step S7; No), the process proceeds to step S1.

  If it is determined in step S7 that there is a common formula component in each formula component that can be extracted from the entered formula and each formula component stored in the color-specific copy buffer 120 (step S7; Yes) ), The CPU 11 detects the corresponding color associated with the longest mathematical expression component in the color-specific copy buffer 120 among the common mathematical expression components, and the mathematical expression component (common and longest) in the inputted mathematical expression. Are identified and displayed with the corresponding color (step S8), and the process proceeds to step S1.

  If it is determined that the cursor position (input position, edit position) is included in the mathematical expression component identified and displayed in color in step S5 (step S5; Yes), the CPU 11 determines in step S3. After the mathematical expression component (edited colored component including the cursor position) after input editing (correction) is set as a designated range (step S10), among the display colors of the color chart 31, the copy buffer 120 for each color. In step S11, a color different from the corresponding color associated with the mathematical expression component before editing (correction) is set as the designated color (step S11), and the process proceeds to step S21 described later. Here, in the present embodiment, when the range of the mathematical formula component is designated, the mathematical formula component is stored as a copy target. As a result, when the formula component stored in the color-specific copy buffer 120 is edited (corrected), the edited formula component is displayed in each display color of the color chart 31 in the processing after step S21 described later. Of these, the color-specific copy buffer 120 is associated with a color different from the corresponding color associated with the mathematical expression component before editing, and is stored in the color-specific copy buffer 120 again. Note that as the designated color set in step S11, a complementary color of the corresponding color associated with the mathematical expression component before editing can be used.

  When it is determined in step S2 that the user operation is not a mathematical expression input operation (step S2; No), the CPU 11 determines whether the user operation is a range specifying operation of the mathematical expression component part or the color chart 31. It is determined whether or not the operation is a display color designation operation (step S20).

  If it is determined in step S20 that the user operation is a range specifying operation and a display color specifying operation (step S20; Yes), the CPU 11 associates the formula component of the specified range with the specified color and copies it by color. The data is stored in the buffer 120 (step S21).

  Next, the CPU 11 discriminates and displays each of the mathematical formula components designated by the range and the mathematical formula components having the same contents (equivalent or equivalent) in the designated color among the mathematical formulas displayed on the display 3 (step S23). ), And proceeds to step S1. As a result, each formula component having the same content as the formula component is identified and displayed by the corresponding color of the formula component stored in the color-specific copy buffer 120.

  When it is determined in step S20 that the user operation is not a range specifying operation and a display color specifying operation (step S20; No), the CPU 11 specifies any display color by the color chart 31. It is determined whether or not the operation is a drag operation for the color area (or any display color designation operation and paste position designation operation by the color chart 31) (step S31). Here, in the present embodiment, when the color region is dragged after the display color specifying operation of the color chart 31, the formula component corresponding to the color is specified by the drag operation (end position of the drag operation). ) Will be pasted. Similarly, when the paste position specifying operation is performed after the display color specifying operation of the color chart 31, the mathematical formula component corresponding to the color is pasted to the specified position.

  If it is determined in step S31 that the user operation is a color designation operation and a drag operation (or a color designation operation and a paste position designation operation) (step S31; Yes), the CPU 11 designates in the color-specific copy buffer 120. The mathematical expression component corresponding to the color is pasted and input (inserted) at a specified position (specified position by drag operation or paste position specifying operation) (step S32).

  Next, the CPU 11 identifies and displays the pasted formula component in the designated color, that is, the corresponding color associated with the formula component in the color-specific copy buffer 120 (step S33).

  Next, the CPU 11 determines whether or not the paste position is included in the mathematical expression component that is identified and displayed in color, that is, whether or not the mathematical expression component that includes the paste position is identified and displayed in color (Step). If it is determined that it is not included (step S34; No), the process proceeds to step S1.

  If it is determined in step S34 that the paste position is included in the mathematical expression component identified and displayed in color (step S34; Yes), the CPU 11 and the pasted mathematical expression component Are displayed in a multiplied state, and the formula component after multiplication is set to a specified range (step S35), and the process proceeds to step S11. In step S35, if the mathematical expression component that is identified and displayed with color is the same as the pasted mathematical expression component, the CPU 11 converts the mathematical expression component into a power form and displays it. As a result, the formula component input and displayed in the power format corresponds to the formula component before conversion to the power format by the color-specific copy buffer 120 among the display colors of the color chart 31 in the processing after step S11. The color is associated with a color different from the attached corresponding color and stored in the color-specific copy buffer 120 again.

  If it is determined in step S31 that the user operation is not a color designation operation and a drag operation (or a color designation operation and a paste position designation operation) (step S31; No), the CPU 11 determines that the user operation is a mathematical formula. It is determined whether or not the operation is a part designation operation and factorization execution operation (step S41).

  If it is determined in step S41 that the user operation is an operation for specifying a mathematical expression component and an execution operation for factorization (step S41; Yes), the CPU 11 is designated by a user operation from among the displayed mathematical expressions. The numerical formula component is factorized and displayed (step S42). A conventionally known method can be used as a method for factoring the mathematical formula component.

  Next, the CPU 11 determines whether or not the mathematical expression component identified and displayed with color is factored (step S43), and determines that the mathematical expression component identified and displayed with color is not factored. In the case (step S43; No), the process proceeds to step S1.

  If it is determined in step S43 that the mathematical expression component that is identified and displayed with color has been factorized (step S43; Yes), the CPU 11 sets the mathematical component part after factorization as a designated range ( Step S44) Among the display colors of the color chart 31, a color different from the corresponding color associated with the mathematical component before factorization in the color-specific copy buffer 120 is set as the designated color (Step S45). The process proceeds to S21. Thereby, when the mathematical expression component stored in the color-specific copy buffer 120 is factorized, the mathematical expression component after the factorization is obtained from among the display colors of the color chart 31 in the processing after step S21. The color-specific copy buffer 120 associates with a color different from the corresponding color associated with the mathematical expression component before factorization and is stored in the color-specific copy buffer 120 again. Note that as the designated color set in step S45, a similar color of the corresponding color associated with the mathematical expression component before editing can be used.

  Further, when it is determined in step S41 described above that the user operation is not an operation of designating a mathematical expression component and performing factorization (step S41; No), the CPU 11 determines whether or not the user operation is an end operation. Determination is made (step S51).

  If it is determined in step S51 that the user operation is not an end operation (step S51; No), the CPU 11 performs a process corresponding to the user operation while determining that the user operation is an end operation ( In step S51; Yes), the calculation process ends.

[1.4 Operation example]
Next, the operation of the scientific calculator 1 described above will be specifically described with reference to the drawings. In the drawing referred to in the following operation example, the area surrounded by a broken line on the display screen of the display 3 is a color corresponding to this area (“Lb”: light blue, “B”: blue). (Blue), “P”: Pink, “R”: Red, “Y”: Yellow “Yellow”, “V”: Violet It shows that.

(Operation example 1)
First, as shown in FIG. 5A, when the calculation process is executed, the color chart 31 is displayed on the display 3.

  Next, when the user inputs mathematical formulas “x = 2y + 1”, “2y + 1 = 7x + 5”, “z ^ 2 = 5” (step S2; Yes), the mathematical formula corresponding to the input operation is entered at the cursor position on the display 3. Is displayed (step S3).

  Next, when the user performs a range designation operation for the mathematical expression component “2y + 1” and a designation operation for the display color “pink” of the color chart 31 (step S20; Yes), the mathematical expression component “2y + 1” in the designated range is designated. It is associated with the color “pink” and stored in the color-specific copy buffer 120 (step S21). Next, as shown in FIG. 5B, among the mathematical formulas displayed on the display 3, the range-designated mathematical formula component “2y + 1” (see the mathematical formula portion on the first line in the figure), The mathematical expression component “2y + 1” (see the mathematical part in the second row in the figure) having the same contents is identified and displayed with the designated color “pink” (step S23). In this operation example, when the mathematical formula component is associated with a color and stored in the color-specific copy buffer 120, the color area in the color chart 31 is identified and displayed surrounded by a bold line. ing.

  Next, as shown in FIG. 5C, when the user performs an operation for specifying the display color “pink” of the color chart 31 and a drag operation for the color region of “pink” (step S31; Yes), The formula component “2y + 1” associated with the designated color “pink” in the color-specific copy buffer 120 is pasted and input (inserted) at the designated position (step S32), and the pasted formula component “2y + 1” is designated. It is identified and displayed with the color “pink” (step S33). In this operation example, when a drag operation is performed on a color area, a mathematical expression component associated with the color is displayed in the vicinity of the pointer in the color-specific copy buffer 120 (the lower end in the figure). Part "2y + 1").

  Next, as shown in FIG. 6A, when the user again performs an operation for specifying the display color “pink” of the color chart 31 and a drag operation for the “pink” color region (step S31; Yes). The mathematical expression component “2y + 1” associated with the designated color “pink” in the copy buffer 120 for each color is pasted and inputted (inserted) at the designated position (step S32).

  Next, it is determined that the paste position is included in the mathematical expression component “2y + 1” that is identified and displayed with color (step S34; Yes), the mathematical expression component “2y + 1”, and the pasted mathematical expression component “2y + 1”. "Is displayed after being converted to a power form, and the mathematical expression component" (2y + 1) 2 "after multiplication is set in the designated range (step S35).

  Next, among the display colors of the color chart 31, a color “light blue” different from the corresponding color “pink” associated with the mathematical expression component “2y + 1” before editing in the copy buffer 120 for each color is set as the designated color. (Step S11), the mathematical component “(2y + 1) 2” of the designated range is stored in the color-specific copy buffer 120 in association with the designated color “light blue” (step S21) and displayed on the display 3 Among the existing mathematical expressions, the range-designated mathematical component “(2y + 1) 2” is identified and displayed with the designated color “light blue” (step S23).

  In addition, when the user performs an editing operation on the mathematical expression component “2y + 1” from the state shown in FIG. 5C (step S2; Yes), the operation is performed as shown in FIGS. 6B and 6C. Accordingly, “y” in the mathematical expression component “2y + 1” is changed to “x” and displayed (step S3).

  Next, it is determined that the cursor position (input position, editing position) is included in the mathematical expression component “2x + 1” that is identified and displayed in color (step S5; Yes), and the mathematical expression component “2x + 1” is set as the designated range. After the setting (step S10), among the display colors of the color chart 31, a color “blue” different from the corresponding color “pink” associated with the formula component “2y + 1” before editing in the copy buffer 120 for each color. "Is set as the designated color (step S11). The mathematical expression component “2x + 1” of the designated range is stored in the color-specific copy buffer 120 in association with the designated color “blue” (step S21), and the range designation among the mathematical expressions displayed on the display 3 is designated. The mathematical expression component “2x + 1” is identified and displayed with the designated color “blue” (step S23).

  Next, as shown in FIG. 6C, when the user performs an operation of specifying the display color “blue” of the color chart 31 and a drag operation for the color region of “blue” (step S31; Yes), The formula component “2x + 1” associated with the specified color “blue” in the color-specific copy buffer 120 is pasted and input (inserted) at the specified position (step S32).

(Operation example 2)
First, as shown in FIG. 7, when the calculation process is executed, the color chart 31 is displayed on the display 3.

  Next, as shown in the first line in the figure, when the user inputs the mathematical expression “x2-9 = 6x-18” (step S2; Yes), the mathematical expression corresponding to the input operation is input at the cursor position on the display 3. Is displayed (step S3). In this figure, when the display state of the mathematical expression is changed, the mathematical expressions before and after the change are shown side by side.

  Next, when the user designates the range for the formula component of “x2-9” and designates the color “red” (step S20; Yes), the formula component “x2-9” in the designated range is designated color. It is associated with “red” and stored in the color-specific copy buffer 120 (step S21). Then, among the mathematical formulas displayed on the display 3, the mathematical formula component “x2-9” whose range is designated is identified and displayed with the designated color “red” (step S23).

  Similarly, when the user designates the range for the formula component of “6x-18” and designates the color “blue” (step S20; Yes), the formula component “6x-18” of the designated range is designated color. It is associated with “blue” and stored in the color-specific copy buffer 120 (step S21). Then, among the mathematical formulas displayed on the display 3, the range-designated mathematical formula component “6x-18” is identified and displayed with the designated color “blue” (step S23).

  Next, when the user performs an operation for specifying the mathematical expression component “x2-9” and an execution operation for factorization (step S41; Yes), as shown in the second line in the figure, the designated mathematical expression component “ “x2-9” is factorized into “(x + 3) (x−3)” and displayed (step S42). Next, it is determined that the mathematical expression component “x2-9” that is identified and displayed with color is factorized (step S43; Yes), and the mathematical expression component “(x + 3) (x-3)” after factorization is determined. After being set as the designated range (step S44), among the display colors of the color chart 31, the corresponding color “red” associated with the mathematical component “x2-9” before factorization in the copy buffer 120 for each color. A color “pink” different from that is set as the designated color (step S45). The mathematical expression component “(x + 3) (x−3)” in the designated range is stored in the color-specific copy buffer 120 in association with the designated color “pink” (step S21) and displayed on the display 3. Among them, the range-designated mathematical expression component “(x + 3) (x−3)” is identified and displayed with the designated color “pink” (step S23).

  Similarly, when the user performs an operation of designating the mathematical expression component “6x-18” and an execution operation of factorization (step S41; Yes), the designated mathematical expression component “6x-18” becomes “6 (x−3). ) "Is displayed after being factored (step S42). Next, it is determined that the mathematical expression component “6x-18” that is identified and displayed in color is factorized (step S43; Yes), and the mathematical expression component “6 (x-3)” after the factorization is in the specified range. (Step S44), among the display colors of the color chart 31, the corresponding color “blue” associated with the mathematical expression component “6x-18” before factorization in the copy buffer 120 for each color A different color “light blue” is set as the designated color (step S45). The mathematical expression component “6 (x−3)” in the designated range is stored in the color-specific copy buffer 120 in association with the designated color “light blue” (step S21), and is displayed among the mathematical expressions displayed on the display 3. The range-specified mathematical expression component “6 (x−3)” is identified and displayed with the designated color “light blue” (step S23).

  Next, as shown in the third line in the figure, after the user moves the right side in the formula “(x + 3) (x−3) = 6 (x−3)” to the left side (step S51; No), When the range is specified for the formula component of “x-3” and the color “yellow” is specified (step S20; Yes), the formula component “x-3” of the specified range corresponds to the specified color “yellow”. The data is added and stored in the color-specific copy buffer 120 (step S21). Then, among the mathematical formulas displayed on the display 3, the range-designated mathematical formula portion “x-3” (the left portion in the formula) and the mathematical formula construction portion of the same content (the right portion in the formula) Are identified and displayed with the designated color “yellow” (step S23). In this operation example, the mathematical expression component “(x + 3)” is identified and displayed in violet at this time.

  Then, as shown in the 4th to 6th lines in the figure, the user changes the mathematical expression “(x + 3) (x−3) −6 (x−3) = 0” to “(x−3) {(x + 3) −6”. } = 0 ”,“ (x−3) (x−3) = 0 ”, and“ (x−3) 2 = 0 ”(Step S51; No), formulas in the changed formulas The component “x-3” is identified and displayed with the corresponding color “yellow”.

  As described above, according to the present embodiment, as shown in steps S20 to S23, S31 to S33 in FIG. 4 and FIG. When any display color by the color chart 31 is designated, the designated formula component and color are associated with each other and stored in the color-specific copy buffer 120, and the designated formula component is designated by the designated color. Based on the user operation from this state, one of the display colors of the color chart 31 corresponding to the formula component and the position where the new formula component should be input is designated based on the user operation Then, the formula component corresponding to the specified color is input to the specified position, and the entered formula component is identified and displayed by the correspondence of the formula component, so it is identified by color If the indicated formula components are present in the formula, by specifying the color in the color chart 31, by specifying an input position, it is possible to paste the same formula components in the specified position. Therefore, even when there are a plurality of copied mathematical formula components in the mathematical formula, the mathematical formula components can be pasted by specifying the identification color of each mathematical formula component with the color chart 31. A plurality of copied mathematical formula components can be pasted more easily than in the past.

  Also, as shown in step S23 of FIG. 4, FIG. 5B, etc., among the display-controlled mathematical expressions, each mathematical expression component stored by the color-specific copy buffer 120 is identified and displayed by the corresponding color. Thus, it is possible to easily grasp which color in the color chart 31 corresponds to each mathematical formula component.

  Also, as shown in steps S41 to S45 of FIG. 4 and FIG. 7 and the like, when the formula component parts stored in the color-specific copy buffer 120 are factorized, the formula component parts after factorization are copied by color. Since it is stored in the buffer 120, when the formula component stored by the color-specific copy buffer 120 is factorized, the formula component after factorization may be automatically stored in the color-specific copy buffer 120. it can. Also, the mathematical component part after factorization is stored in the color-specific copy buffer 120 in association with the similar color of the corresponding color associated with the mathematical component part before factorization among the display colors of the color chart 31. Therefore, each mathematical formula component having the same content as the mathematical formula component after factorization is identified and displayed in the same color (the same color of the corresponding color of the mathematical formula component before factorization). Therefore, the mathematical formula can be confirmed by consciously associating the mathematical components before and after the factorization.

  Also, as shown in step S35 of FIG. 4, FIG. 6A, and the like, the formula component already displayed at the paste position and the color-specific copy buffer 120 are associated with the specified color at the time of the paste operation. When the mathematical formula component is the same, the mathematical formula component is input after being converted to a power format, and the mathematical formula component input in the power format is converted to a power format among the display colors of the color chart 31. Since each color component is stored in the color-specific copy buffer 120 in association with a color different from the corresponding color associated with the mathematical expression component part before conversion, each mathematical expression component having the same contents as the mathematical expression component part after conversion to the power form Each part can be identified and displayed in the same color.

  Further, as shown in steps S10 to S11 of FIG. 4, FIG. 6B, and the like, when the formula component stored by the color-specific copy buffer 120 is edited (corrected), the formula component after editing is edited. Is stored in the color-specific copy buffer 120 in association with a color different from the corresponding color associated with the mathematical expression component before editing among the display colors of the color chart 31. Can be identified and displayed in the same color.

[2. Second Embodiment]
Then, the structure of the electronic device in 2nd Embodiment is demonstrated. In addition, the same code | symbol is attached | subjected to the component similar to said 1st Embodiment, and the description is abbreviate | omitted.

[2.1 Functional configuration]
As shown in FIG. 2, the scientific calculator 1A according to the present embodiment includes a RAM 12A and a storage unit 13A.

  The RAM 12A has a color-specific copy buffer 120A as a work area. In this color-specific copy buffer 120A, as shown in FIG. 9, a mathematical expression component that is a copy target in a later-described calculation process (see FIG. 10) is stored in association with any one of a plurality of types of colors. It has become so. Further, in the calculation process, when a variable is connected with an equal sign and input to the formula component, the variable is also stored in the color-specific copy buffer 120A in association with the formula component. ing. In addition, since the variable in this Embodiment is comprised from one character and contained in a numerical formula, it is also a numerical formula structure part.

  The storage unit 13A stores a calculation program 130A as a program according to the present invention. The calculation program 130A is a program for causing the CPU 11 to execute a calculation process (see FIG. 10) described later.

[2.2 Operation of scientific calculator]
Next, the operation of the scientific calculator 1A will be described.

  FIG. 10 is a flowchart for explaining the operation of the calculation process. In this calculation process, when a user inputs a calculation process execution instruction via the input unit 14, the calculation program 130A is read from the storage unit 13 and appropriately expanded in the RAM 12A. Is executed in cooperation with the CPU 11.

  As shown in this figure, in the calculation process, the CPU 11 first displays the color chart 31 represented by each color in the color-specific copy buffer 120A on the display 3 and detects a user operation (step T1). It is determined whether or not the user operation is a mathematical expression input operation (step T2). In this embodiment, the mathematical expression input operation does not include a mathematical expression editing (correction) operation.

  If it is determined in step T2 that the user operation is a mathematical expression input operation (step T2; Yes), the CPU 11 inputs and displays a mathematical formula component corresponding to the input operation at the cursor position of the display 3 ( Step T3).

  Next, the CPU 11 determines whether or not the formula component is stored in the color-specific copy buffer 120A (step T4). If it is determined that it is not stored (step T4; No), the process proceeds to step T1. To do.

  If it is determined in step T4 that the formula component is stored in the color-specific copy buffer 120A (step T4; Yes), the CPU 11 extracts each formula component that can be extracted from the input formula, Each formula component stored in the separate copy buffer 120A is compared (step T6).

  Next, the CPU 11 determines whether or not there is an equivalent (equivalent) formula component in each formula component that can be extracted from the entered formula and each formula component stored in the color-specific copy buffer 120A. If it is determined (step T7) and it is determined that it does not exist (step T7; No), the process proceeds to step T8 described later. It should be noted that in this step T7, the equivalence formula component does not include a variable.

  Also, in step T7, it is determined that there is an equation component having the same value (equivalent and the same content) in each equation component that can be extracted from the inputted equation and each equation component stored in the color-specific copy buffer 120A. In the case (step T7; Yes), the CPU 11 detects the corresponding color associated with the longest equation component in the color-specific copy buffer 120A among the equation components having the same value, and the equation in the inputted equation. The component (equivalent and longest mathematical component) is identified and displayed with the corresponding color (step T8).

  Next, the CPU 11 refers to each variable stored in the color-specific copy buffer 120A, determines whether any variable exists in the input mathematical formula (step T9), and determines that it does not exist. In the case (step T9; No), the process proceeds to step T1.

  If it is determined in step T9 that any variable is present in the input mathematical formula (step T9; Yes), the CPU 11 corresponds to the corresponding color in the color-specific copy buffer 120A. , And the variable in the input mathematical expression is identified and displayed with the corresponding color (step T10), and the process proceeds to step T1.

  If it is determined in step T2 that the user operation is not a mathematical expression input operation (step T2; No), the CPU 11 determines whether or not the user operation is a mathematical expression correction (editing) operation ( Step T12). In the present embodiment, the mathematical expression correction (editing) operation includes a movement operation of the mathematical formula component in the inputted mathematical formula.

  When it is determined in step T12 that the user operation is a mathematical expression correction (editing) operation (step T12; Yes), the CPU 11 displays a mathematical expression corresponding to the correction operation on the display 3 (step T13).

  Next, the CPU 11 determines whether or not the formula component that is identified and displayed with color (the formula component stored in the copy buffer 120A for each color) has been corrected (step T14), and determines that it has not been corrected. In the case (Step T14; No), the process proceeds to Step T4 described above.

  Further, when it is determined in step T14 that the mathematical expression component identified and displayed with color has been modified (step T14; Yes), the CPU 11 has the same value ( It is determined whether or not they are equivalent (same content) (step T15). If it is determined that they are equivalent (step T15; Yes), the process proceeds to step T4 described above.

  If it is determined in step T15 that the uncorrected formula component and the corrected formula component are not the same value (step T15; No), the CPU 11 adds the color to the corrected formula component. Is deleted, the identification display of the formula component part is canceled and the display content is updated (step T16), and the process proceeds to step T4 described above. Here, when the mathematical composition part before and after the correction is not the same value, a new symbol (including letters and numbers) is inserted in the mathematical composition part before the modification, or a part of the mathematical composition part before the modification is For example, it may be moved and separated.

  If it is determined in step T12 that the user operation is not a mathematical expression correction (editing) operation (step T12; No), the CPU 11 uses the range constituting operation of the mathematical expression component and the color chart 31. It is determined whether or not any display color is designated (step T20).

  If it is determined in step T20 that the user operation is a range specifying operation and a display color specifying operation (step T20; Yes), the CPU 11 associates the formula component of the specified range with the specified color and copies it by color. The data is stored in the buffer 120A (step T21).

  Next, the CPU 11 includes a mathematical expression component having a range specified in the mathematical expression displayed on the display 3 and a mathematical expression component having the same content (equivalent or equivalent) (however, in this case, the mathematical expression component having the designated range) Are displayed in a designated color (step T23). As a result, each formula component having the same content as the formula component is identified and displayed by the corresponding color of the formula component stored in the color-specific copy buffer 120A.

  Next, the CPU 11 determines whether or not a variable connected with an equal sign to the formula component of the specified range is input (step T24), and when it is determined that the variable is not input (step T24; No). Shifts to step T1 described above.

  If it is determined in step T24 that a variable connected to the mathematical expression component of the specified range with an equal sign is input (step T24; Yes), the CPU 11 sets the variable to the mathematical component of the specified range. The associated color is stored in the color-specific copy buffer 120A (step T25).

  Next, the CPU 11 identifies and displays the variable by the corresponding color of the mathematical formula component of the designated range (step T26), and proceeds to the above-described step T1. More specifically, in this step T26, the CPU 11 identifies and displays the variable connected to the mathematical expression component of the designated range by the equal sign and the input same variable.

  When it is determined in step T20 that the user operation is not a range specifying operation and a display color specifying operation (step T20; No), the CPU 11 specifies any display color by the color chart 31. It is determined whether or not the operation is a drag operation for the color area (or any display color designation operation and paste position designation operation by the color chart 31) (step T31). Here, in the present embodiment, when the color region is dragged after the display color specifying operation of the color chart 31, the formula component corresponding to the color is specified by the drag operation (end position of the drag operation). ) Will be pasted. Similarly, when the paste position specifying operation is performed after the display color specifying operation of the color chart 31, the mathematical formula component corresponding to the color is pasted to the specified position.

  When it is determined in step T31 that the user operation is a color designation operation and a drag operation (or a color designation operation and a paste position designation operation) (step T31; Yes), the CPU 11 designates in the color-specific copy buffer 120A. The mathematical expression component corresponding to the color is pasted and input (inserted) at a specified position (specified position by a drag operation or a paste position specifying operation) (step T32). It should be noted that an operation for overwriting the mathematical expression component already input in step T1 and a color designation operation and a drag operation (or a color designation operation and a paste position designation operation) are performed (for example, When you specify the range of the entered mathematical component and then perform a color specification operation and drag operation, or when you specify the range of the entered mathematical component as the paste position and perform a color specification operation) In step T32, the CPU 11 replaces the mathematical expression component designated as the paste destination with the mathematical expression component associated with the designated color in the color-specific copy buffer 120A.

  Next, the CPU 11 identifies and displays the pasted formula component in the designated color, that is, the corresponding color associated with the formula component in the color-specific copy buffer 120A (step T33), and proceeds to step T1.

  If it is determined in step T31 that the user operation is not a color designation operation and a drag operation (or a color designation operation and a paste position designation operation) (step T31; No), the CPU 11 determines that the user operation is colored. It is determined whether or not the operation is a designation operation for the mathematical formula component, for example, a touch operation for a colored mathematical formula component (step T41). It should be noted that variables are not included in the formula component in step T41.

  If it is determined in step T41 that the user operation is a designation operation for a colored mathematical expression component (step T41; Yes), the CPU 11 sets a variable in the color-specific copy buffer 120A for the designated mathematical expression component. Is determined to be associated (step T42). If it is determined that they are not associated (step T42; No), the process proceeds to step T1.

  On the other hand, when it is determined that a variable is associated in the color-specific copy buffer 120A with respect to the mathematical formula component designated in step T42 (step T42; Yes), the CPU 11 designates the designated mathematical formula component. Is replaced with the variable, and the variable is identified and displayed with the corresponding color of the formula component (step T43), and the process proceeds to step T1.

  On the other hand, if it is determined in step T41 that the user operation is not a designation operation for a colored mathematical component (step T41; No), the CPU 11 designates the user operation for a colored variable, for example, a touch operation for a colored variable. Is determined (step T45).

  If it is determined in step T45 that the user operation is a designation operation for a colored variable (step T45; Yes), the CPU 11 corresponds the designated variable to the variable in the color-specific copy buffer 120A. In addition to replacing the attached mathematical formula component, the mathematical formula component is identified and displayed with the corresponding color of the mathematical formula component (step T46), and the process proceeds to step T1.

  If it is determined in step T45 that the user operation is not a designation operation for a colored variable (step T45; No), the CPU 11 determines whether the user operation is an end operation (step T51). .

  When it is determined in step T51 that the user operation is not an end operation (step T51; No), the CPU 11 performs a process corresponding to the user operation while determining that the user operation is an end operation ( In step T51; Yes), the calculation process is terminated.

[2.3 Example of operation]
Next, the operation of the above-described scientific calculator 1A will be specifically described with reference to the drawings. In the drawing referred to in the following operation example, the area surrounded by a broken line on the display screen of the display 3 is a color corresponding to this area (“Lb”: light blue, “B”: blue). (Blue), “P”: Pink, “R”: Red, “Y”: Yellow “Yellow”, “V”: Violet, “O”: Orange “Orange”) It indicates that characters in the area are displayed.

(Operation example 1)
First, as shown in FIG. 11A, when the calculation process is executed, the color chart 31 is displayed on the display 3.

  Next, when the user inputs the mathematical expression “a + b = A” (step T2; Yes), the mathematical expression corresponding to the input operation is input and displayed at the cursor position on the display 3 (step T3).

  Next, when the user performs a range designation operation of the mathematical expression component “a + b” and a designation operation of the display color “violet” of the color chart 31 (step T20; Yes), the mathematical expression component “a + b” of the designated range is designated. It is stored in the color-specific copy buffer 120 in association with the color “violet” (step T21).

  Next, among the mathematical formulas displayed on the display 3, the mathematical formula component “a + b” whose range is designated is identified and displayed with the designated color “violet” (step T23).

  Next, it is determined that the variable “A” connected to the mathematical expression component “a + b” of the specified range by the equal sign is input (step T24; Yes), and the variable “A” is the mathematical expression component of the specified range. It is stored in the color-specific copy buffer 120A in association with “a + b” (step T25).

  Next, as shown in FIG. 11B, the variable “A” is identified and displayed by the corresponding color “violet” of the mathematical expression component “a + b” in the specified range (step T26).

  Next, as shown in FIG. 11C, when the user inputs mathematical expressions “(a + b + c) 2”, “= (A + c) 2”, “= A2 + 2Ac + c2” (step T2; Yes), the input operation is performed. The mathematical formula is input and displayed at the cursor position on the display 3 (step T3).

  Next, each formula component that can be extracted from the entered formula and each formula component stored in the color-specific copy buffer 120A are compared (step T6), and then each formula that can be extracted from the entered formula. It is determined that there is an equivalent (equivalent) formula component “a + b” in the formula component and each formula component stored in the color-specific copy buffer 120A (step T7; Yes). This formula component “a + b” The corresponding color “violet” associated with the color-specific copy buffer 120A is detected, and the formula component “in the formula“ (a + b + c) 2 ”,“ = (A + c) 2 ”,“ = A2 + 2Ac + c2 ”“ “a + b” is identified and displayed with the corresponding color “violet” (step T8).

  Next, each variable stored in the color-specific copy buffer 120A is referred to, and the variable “A” exists in the input mathematical expressions “(a + b + c) 2”, “= (A + c) 2”, “= A2 + 2Ac + c2”. Then, it is determined (step T9; Yes). Then, the corresponding color “violet” associated with the variable “A” in the color-specific copy buffer 120A is detected, and the variable “A” in the input mathematical expression is identified and displayed with the corresponding color “violet”. (Step T10).

  Next, as shown in FIG. 11D, when the user performs a touch operation on the colored mathematical expression component “a + b” (here, “a + b” in the second row) (step T41; Yes), the touch is designated. It is determined that the variable “A” is associated with the formula component “a + b” in the color-specific copy buffer 120A (step T42; Yes), and the designated formula component “a + b” is associated with the variable “A”. The variable “A” is identified and displayed by the corresponding color “violet” of the mathematical formula component “a + b” (step T43).

  Next, when the user performs a touch operation on the colored variable “A” (here, “A” in the second row) (step T45; Yes), as shown in FIG. “A” is replaced with the formula component “a + b” associated with the variable “A” in the color-specific copy buffer 120A, and the formula with the corresponding color “violet” of the formula component “a + b”. The component “a + b” is identified and displayed (step T46).

  Next, as shown in FIG. 12A, when the user inputs the mathematical expression “= (” (step T2; Yes), the mathematical expression corresponding to the input operation is input at the cursor position on the display 3 and displayed ( Step T3).

  Next, when the user performs an operation for specifying the display color “violet” of the color chart 31 and a drag operation for the color region of “violet” (step T31; Yes), the specified color “violet” is displayed in the color-specific copy buffer 120. The mathematical expression component “a + b” associated with “” is pasted and input (inserted) at the designated position (step T32). As a result, the mathematical expression “= (a + b”) is input to the fifth line of the display 3. Then, the pasted mathematical formula component “a + b” is identified and displayed with the designated color “violet” (step). T33).

  Next, when the user inputs the mathematical expression “) 2 + 2 (” (step T2; Yes), the mathematical expression corresponding to the input operation is input and displayed at the cursor position on the display 3 (step T3), whereby the display 3 is displayed. In the fifth line, the formula “= (a + b) 2 + 2 (” is input.

  Next, when the user performs an operation for specifying the display color “violet” of the color chart 31 and a drag operation for the color region of “violet” (step T31; Yes), the specified color “violet” is displayed in the color-specific copy buffer 120. The mathematical expression component “a + b” associated with “” is pasted and input (inserted) at the designated position (step T32). As a result, the formula “= (a + b) 2 + 2 (a + b”) is input to the fifth line of the display 3. The pasted formula component “a + b” is identified and displayed with the designated color “violet”. (Step T33).

  Next, as shown in FIG. 12B, when the user inputs the mathematical expression “) c + c2” (step T2; Yes), the mathematical expression corresponding to the input operation is input and displayed at the cursor position of the display 3 (see FIG. 12B). Step T3). As a result, the expression “= (a + b) 2 + 2 (a + b) c + c2” is input to the fifth line of the display 3.

  Next, when the user performs a range designation operation of the mathematical expression component “(a + b) 2” and a designation operation of the display color “orange” of the color chart 31 (step T20; Yes), the mathematical expression component “(( a + b) 2 ”is associated with the designated color“ orange ”and stored in the color-specific copy buffer 120 (step T21). Then, of the mathematical formulas displayed on the display 3, the mathematical formula component “(a + b) 2” for which the range is designated is identified and displayed with the designated color “orange” (step T23).

  Similarly, when the user performs a range designation operation of the mathematical expression component “2 (a + b) c” and a designation operation of the display color “blue” of the color chart 31 (step T20; Yes), the mathematical expression component “ 2 (a + b) c ”is associated with the designated color“ blue ”and stored in the color-specific copy buffer 120 (step T21). Then, among the mathematical expressions displayed on the display 3, the mathematical expression component “2 (a + b) c” whose range is designated is identified and displayed with the designated color “blue” (step T23).

  Next, as shown in FIG. 12C, when the user inputs the mathematical formula “= a2 + 2ab + b2 + 2ac + 2bc + c2” as the sixth line of the mathematical formula (step T2; Yes), the mathematical formula corresponding to the input operation is entered at the cursor position on the display 3. Is displayed (step T3). Note that the color chart 31 is not shown in FIG. 12C and FIG. 12D described later.

  Next, each formula component that can be extracted from the entered formula and each formula component stored in the color-specific copy buffer 120A are compared (step T6), and then each formula that can be extracted from the entered formula. It is determined that there is an equivalent (equivalent) formula component “a2 + 2ab + b2”, “2ac + 2bc” in the formula component and each formula component stored in the color-specific copy buffer 120A (step T7; Yes). Then, the corresponding color “orange” associated with the formula component “a2 + 2ab + b2” in the color-specific copy buffer 120A is detected, and the formula component “a2 + 2ab + b2” in the input formula is colored with the corresponding color “orange”. (Step T8). Similarly, the corresponding color “blue” associated with the formula component “2ac + 2bc” in the color-specific copy buffer 120A is detected, and the formula component “2ac + 2bc” in the input equation has the corresponding color “blue”. Identification display with color (step T8)

  Next, when the user inputs the same content as the sixth line of the mathematical expression as the seventh line of the mathematical expression (step T2; Yes), the mathematical expression in the seventh line is displayed in the same manner as the mathematical expression in the sixth line (step S2). T3, step T8).

  Next, as shown in FIG. 12D, when the user performs a formula correction (edit) operation to rearrange the formula components (step T12; Yes), the formula “= a2 + b2 + c2 + 2ac + 2bc + 2ab” corresponding to the correction operation is obtained. It is displayed on the display 3 (step T13).

  Next, it is determined that the mathematical expression component “a2 + 2ab + b2” identified and displayed in color is corrected (step T14; Yes), and the mathematical expression component “a2 + 2ab + b2” before correction is the corrected mathematical expression component (here, “a2 + b2”). And “+ 2ab”) are not the same value (equivalent and the same content) (step T15; No), and the color “orange” attached to the corrected mathematical formula components “a2 + b2” and “+ 2ab” is erased. The display contents are updated (step T16). At this time, it is determined that the mathematical expression component “2ac + 2bc” before the correction is the same value (equivalent and the same content) as the mathematical expression component “2ac + 2bc” after the correction (step T15; Yes). The portion “2ac + 2bc” is identified and displayed with the color “blue” as it is.

(Operation example 2)
First, as shown in FIG. 13A, when the calculation process is executed, the color chart 31 is displayed on the display 3.

  Next, when the user inputs the equations “2x + y = 8” and “3x−4y = 1” of the simultaneous equations for the variables “x” and “y” (step T2; Yes), the equations corresponding to the input operation are displayed. 3 is input and displayed at the cursor position 3 (step T3).

  Next, when the user solves the simultaneous equations, the first equation “2x + y = 8” is solved for the variable “y”, and the equation “y = 8−2x” is input as the equation on the third line (step T2; Yes), a mathematical expression corresponding to the input operation is input and displayed at the cursor position on the display 3 (step T3).

  Next, when the user performs a range designation operation for the mathematical expression component “8-2x” and a designation operation for the display color “red” of the color chart 31 (step T20; Yes), the mathematical expression component “8-” of the designated range is displayed. 2x "is associated with the designated color" red "and stored in the color-specific copy buffer 120 (step T21).

  Next, among the mathematical formulas displayed on the display 3, the mathematical formula component “8-2x” whose range is designated is identified and displayed with the designated color “red” (step T23).

  Next, it is determined that the variable “y” connected to the mathematical expression component “8-2x” of the designated range by an equal sign is input (step T24; Yes), and the variable “y” is the mathematical expression of the designated range. Corresponding to the component “8-2x”, it is stored in the color-specific copy buffer 120A (step T25).

  Next, as shown in FIG. 13B, the variable “y” is identified and displayed by the corresponding color “red” of the mathematical expression component “8-2x” in the designated range (step T26).

  Next, as shown in FIG. 13C, when the user again inputs the second mathematical expression “3x−4y = 1” as the mathematical expression on the fourth line (step T2; Yes), the mathematical expression corresponding to the input operation is obtained. It is input and displayed at the cursor position on the display 3 (step T3).

  Next, each variable stored in the color-specific copy buffer 120A is referred to, and it is determined that the variable “y” exists in the input mathematical expression “3x−4y = 1” (step T9; Yes). Then, the corresponding color “red” associated with the corresponding variable “y” in the color-specific copy buffer 120A is detected, and the variable “y” in the input mathematical expression is identified and displayed with the corresponding color “red”. (Step T10).

  Next, when the user designates a range of the mathematical formula component “y” in the mathematical formula “3x-4y = 1” that has been input as the paste position and then designates “red” in the color chart 31, FIG. 13D shows. As described above, the formula component “y” whose range is specified as the paste destination is replaced with the formula component “8-2x” associated with the specified color “red” in the color-specific copy buffer 120A, and the formula “3x−” 4 (8-2x) = 1 "is displayed on the fourth line (step T32). However, if the user performs a touch operation on the colored variable “y” (here “y” in the fourth row) without performing this operation (step T45; Yes), the touch-designated variable “y” is changed. The formula “8-2x” associated with the variable “y” in the color-specific copy buffer 120A is replaced with the corresponding formula “8-2x” with the corresponding color “red”. Since the component “8-2x” is identified and displayed (step T46), the same content as in FIG. 13D is displayed.

  Next, as shown in FIGS. 14A and 14B, the user substitutes “y = 8-2x” for the variable “y” in the second mathematical expression “3x−4y = 1”, and the variable “x "3x-32 + 8x = 1", "11x = 33", and "x = 3" are input as formulas on the 5th to 7th rows (step T2; Yes), the formula corresponding to the input operation is It is input and displayed at the cursor position on the display 3 (step T3).

  At this time, instead of inputting the expression “3x−32 + 8x = 1” on the fifth line, the user again inputs the expression “3x−4 (8−2x) = 1” on the fourth line, Even if the mathematical expression “3x−4 (8−2x) = 1” is corrected to “3x−32 + 8x = 1”, the same content as in FIG. 14A is displayed. That is, instead of inputting the expression “3x−32 + 8x = 1” on the fifth line, the user again inputs the expression “3x-4 (8-2x) = 1” on the fourth line (step T2; Yes). The formula on the fifth line is displayed in the same manner as the formula on the fourth line (step T3, step T8). Next, when the user corrects (edits) the mathematical expression and rearranges the constituent elements of the mathematical expression (step T12; Yes), the mathematical expression “3x−32 + 8x = 1” corresponding to the correction operation is displayed on the display 3 ( Step T13). Then, it is determined that the formula component “(8-2x)” identified and displayed in color is corrected (step T14; Yes), and the formula component “(8-2x)” before correction is corrected. It is determined that it is not the same value (equivalent or the same content) as the portion (here, “8x” or the like) (step T15; No), and the color “red” attached to the corrected mathematical formula portion “8x” or the like is erased. Then, the display content is updated (step T16).

  Next, as shown in FIG. 14C, when the user again inputs the mathematical expression “y = 8-2x” (step T <b> 2; Yes), the mathematical expression corresponding to the input operation is input at the cursor position on the display 3. It is displayed (step T3).

  Next, each formula component that can be extracted from the entered formula and each formula component stored in the color-specific copy buffer 120A are compared (step T6), and then each formula that can be extracted from the entered formula. It is determined that there is an equivalent (equivalent) formula component “8-2x” in the formula component and each formula component stored in the color-specific copy buffer 120A (step T7; Yes). The corresponding color “red” associated with the color-specific copy buffer 120A is detected as “8-2x”, and the formula component “8-2x” in the input formula “y = 8-2x” is the corresponding color. Identification is displayed with a color of “red” (step T8).

  Next, each variable stored in the color-specific copy buffer 120A is referred to, and it is determined that the variable “y” exists in the input mathematical expression “y = 8-2x” (step T9; Yes). Then, the corresponding color “red” associated with the corresponding variable “y” in the color-specific copy buffer 120A is detected, and the variable “y” in the input mathematical expression is identified and displayed with the corresponding color “red”. (Step T10).

  Next, as shown in FIG. 14D, the user substitutes “x = 3” for the variable “x” in the formula “y = 8−2x”, and calculates the formula “y = When “8−2 × 3” and “y = 2” are input (step T2; Yes), a mathematical expression corresponding to the input operation is input and displayed at the cursor position on the display 3 (step T3). Then, each variable stored in the color-specific copy buffer 120A is referred to, and it is determined that the variable “y” exists in the input mathematical expressions “y = 8−2 × 3” and “y = 2” ( Step T9; Yes). Then, the corresponding color “red” associated with the corresponding variable “y” in the color-specific copy buffer 120A is detected, and the variable “y” in the input mathematical expression is identified and displayed with the corresponding color “red”. (Step T10).

  As described above, according to the present embodiment, as shown in steps T20 to T23, T31 to T33 in FIG. 10 and FIGS. When any one of a plurality of colors is designated, the designated formula component and the color are associated with each other and stored in the color-specific copy buffer 120A. The formula component stored in the separate copy buffer 120A is identified and displayed with the corresponding color, and any color stored in association with the formula component by the color-specific copy buffer 120A and a new formula component are input. When the position to be specified is specified, the formula component corresponding to the specified color is pasted to the specified position and is identified and displayed with the specified color. If the components are present in the formula, by specifying the color by specifying an input position, it is possible to paste the same formula components in the specified position. Therefore, even if there are a plurality of copied mathematical component parts in the mathematical expression, by specifying the identification color of each mathematical component part, the mathematical composition part can be pasted, It is possible to paste the mathematical formula component part more easily than in the past.

  Also, as shown in Step T23 of FIG. 10, FIGS. 11 to 14 and the like, among the mathematical formulas displayed on the display 3, each mathematical formula component having the same value as the mathematical formula component stored by the color-specific copy buffer 120A is displayed. Since it is identified and displayed with the corresponding color of the formula component, the formula component having the same value can be easily grasped.

  Further, as shown in step T16 of FIG. 10, FIG. 12D, and the like, as a result of the correction of the mathematical formula displayed on the display 3, the mathematical formula component before correction and the mathematical formula component after correction are equivalent. In this case, the identification display for the corrected formula component is canceled and the display content is updated, so the formula component before the correction and the formula component that is no longer equivalent due to the correction are the same. It is possible to prevent the color from being identified and displayed. Therefore, it is possible to easily grasp the mathematical expression component having the same value.

  Further, as shown in steps T10 and T26 of FIG. 10, FIG. 11B, FIG. 13B, and the like, the mathematical expression displayed on the display 3 is changed to the mathematical expression component stored in the color-specific copy buffer 120A. On the other hand, when a variable connected with an equal sign is detected, the variable is stored in association with the formula component, and is stored in association with the formula component of the formula displayed on the display 3. Since each variable is identified and displayed with the corresponding color of the formula component, the variable having the same value as the formula component can be easily grasped.

  Further, as shown in step T43 of FIG. 10, FIG. 11D, and the like, when any mathematical expression component identified and displayed on the display 3 is designated, a variable is set for the designated mathematical composition component. In the case of being associated, the formula component part is displayed by being replaced with the variable, and therefore, it is possible to facilitate input of a variable having the same value as the formula component part.

  Further, as shown in step T46 of FIG. 10, FIG. 11D, or the like, when any variable identified and displayed on the display 3 is designated, the designated variable is associated with the variable. Therefore, it is possible to facilitate the input of the mathematical formula component having the same value as the variable.

  In addition, it is needless to say that the detailed configuration and detailed operation of each component of the scientific calculator 1 in the above embodiment can be appropriately changed without departing from the gist of the present invention.

  For example, the mathematical expression input device according to the present invention has been described as the scientific calculator 1, but those to which the present invention can be applied are not limited to such products, but are mobile phones, personal computers, PDAs (Personal Digital Assistants), and game machines. It can be applied to all electronic devices. Further, the calculation program 130 according to the present invention may be stored in a memory card, a CD, or the like that is detachable from the scientific calculator 1.

  Further, in the case where the user designates the range of the formula component part and designates the display color of the color chart 31, it has been described that any one of the color regions is designated in the color chart 31, but FIG. ) And (b), each column of the color chart 31 is extracted in the vicinity of the range-designated mathematical component and displayed in an enlarged manner, and any one of the enlarged and displayed color regions is designated as a color. It may be specified. Here, FIG. 8A illustrates a state in which the leftmost column of the color chart 31 is enlarged and displayed in the vicinity thereof when the range of the numerical formula component “2y + 1” is designated, and FIG. ) Illustrates a state in which the second column from the left end in the color chart 31 is enlarged and displayed when the user moves the pointer in the right direction from the state illustrated in FIG.

As mentioned above, although several embodiment of this invention was described, the scope of the present invention is not limited to the above-mentioned embodiment, The range of the invention described in the claim, and its equivalent range Including.
The invention described in the scope of claims attached to the application of this application will be added below. The item numbers of the claims described in the appendix are as set forth in the claims attached to the application of this application.
[Appendix]
<Claim 1>
Formula input means for inputting formulas based on user operations;
Formula display means for displaying the formula input by the formula input means;
Formula / color designation means for designating any formula component in the formula displayed by the formula display means and any one of a plurality of colors based on a user operation;
Formula / color correspondence storage means for storing the formula component and the color designated by the formula / color designation means in association with each other;
Of the mathematical formulas displayed on the mathematical formula display means, the mathematical formula component stored by the mathematical formula / color correspondence storage means is identified by the color stored in association with the mathematical formula component by the mathematical formula / color correspondence storage means Formula partial color identification display control means to be displayed;
Color / input position designation for designating one of the colors stored in association with the mathematical expression component by the mathematical expression / color correspondence storage means and the position where the new mathematical expression component should be input in response to a user operation Means,
Paste the mathematical expression component stored in association with the specified color by the color / input position specifying means by the numerical expression / color correspondence storage means to the specified position by the color / input position specifying means, and the specified color Color formula part pasting means for identifying and displaying with,
A mathematical expression input device comprising:
<Claim 2>
The mathematical formula input device according to claim 1,
The mathematical expression partial color identification display control means includes:
Among the mathematical formulas displayed on the mathematical formula display means, each mathematical formula component having the same value as the mathematical formula constituent portion stored by the mathematical formula / color correspondence storage means is associated with the mathematical formula component portion by the mathematical formula / color correspondence storage means. A mathematical expression input device for identifying and displaying in a stored color.
<Claim 3>
The mathematical expression input device according to claim 1 or 2,
Formula correction means for correcting the formula displayed by the formula display means based on a user operation;
When the formula component identified and displayed on the formula display means is corrected by the formula correction means, the formula component before correction and the corrected formula component are not the same value. A mathematical expression input device comprising modified mathematical expression part identification display canceling means for canceling the identification display of a mathematical formula component and causing the mathematical expression display means to update the display content.
<Claim 4>
In the mathematical expression input device according to any one of claims 1 to 3,
A color chart display means for displaying the color chart;
The mathematical expression / color designating means is:
A mathematical expression input device which designates any color in the color chart based on a user operation.
<Claim 5>
The mathematical formula input device according to claim 4,
The color / input position specifying means is:
By designating any color in the color chart based on a user operation, designating any color stored in association with the formula component by the formula / color correspondence storage means, Mathematical expression input device.
<Claim 6>
In the mathematical expression input device according to any one of claims 1 to 5,
Formula correction means for correcting the formula displayed by the formula display means based on a user operation,
The mathematical expression / color correspondence storage means includes:
When the mathematical expression component identified and displayed by the mathematical expression display means is modified by the mathematical expression modification means, the mathematical expression composition part after modification is converted into a mathematical expression before modification by the mathematical expression / color correspondence information storage means among a plurality of colors. A mathematical expression input device that stores information in association with a color different from the corresponding color stored in association with a component.
<Claim 7>
In the mathematical expression input device according to any one of claims 1 to 6,
Variable detection means for detecting a variable connected by an equal sign to the mathematical expression component stored by the mathematical expression / color correspondence storage means from the mathematical expression displayed by the mathematical expression display means,
The mathematical expression / color correspondence storage means includes:
When a variable connected with an equal sign to the mathematical expression component stored by the mathematical expression / color correspondence storage means is detected by the variable detection means, the variable is stored in association with the mathematical expression component,
The mathematical expression partial color identification display control means includes:
Of the mathematical formulas displayed on the mathematical formula display means, the variables stored in association with the mathematical formula components by the mathematical formula / color correspondence storage means are stored in correspondence with the mathematical formula components by the mathematical formula / color correspondence storage means. Mathematical expression input device, wherein each color is identified and displayed.
<Claim 8>
The mathematical formula input device according to claim 7,
Based on a user operation, a formula component specifying unit that specifies any formula component identified and displayed by the formula display unit;
A mathematical formula that is displayed by replacing the mathematical formula component with the variable when the mathematical formula / color correspondence storage device stores the variable in association with the mathematical formula component designated by the mathematical formula component designation device. A mathematical expression input device comprising: a component part / variable replacement means.
<Claim 9>
In the mathematical expression input device according to claim 7 or 8,
Variable designation means for designating any variable identified and displayed by the mathematical expression display means based on a user operation;
A variable / formula component replacement means for displaying the variable designated by the variable designation means by replacing the variable with a mathematical formula component stored in association with the variable by the mathematical expression / color correspondence storage means; A mathematical expression input device.
<Claim 10>
Formula input means for inputting formulas based on user operations;
Formula display means for displaying the formula input by the formula input means;
On a computer with
Formula / color designation function for designating any formula component in the formula displayed by the formula display means and any one of a plurality of colors based on a user operation;
A mathematical expression / color correspondence storage function that associates and stores a mathematical expression component designated by the mathematical expression / color designation function and a color;
Among the formulas displayed on the formula display means, the formula component stored by the formula / color correspondence storage function is identified by the color stored in association with the formula component by the formula / color correspondence storage function. Formula partial color identification display control function to be displayed,
Color / input position designation for designating one of the colors stored in association with the formula component by the formula / color correspondence storage function and the position where the new formula component should be input in response to a user operation Function and
Paste the formula component stored in association with the specified color by the color / input position specifying function by the formula / color correspondence storage function to the specified position by the color / input position specifying function, and the specified color The color formula part pasting function for identifying and displaying with,
A program characterized by realizing.

1, 1A Scientific calculator 2 Input key group 3 Display 11 CPU
12,12A RAM
13, 13A Storage unit 14 Input unit 15 Display unit 130, 130A Calculation program

Claims (11)

And formulas display means for displaying the number equation,
Based on a user operation above, and any of formulas components in equation displayed by the mathematical expression display means, specifying the one color among the plurality of colors, the front SL specified by the formula components Formula / color correspondence storage control means for performing control to store the specified color in association with each other;
Of the mathematical formulas displayed on the mathematical formula display means, a mathematical formula part color identification display control means for identifying and displaying the designated mathematical formula component in the designated color;
In response to a user operation, any one of the colors stored in association with the formula component is designated as the designated color by the formula / color correspondence storage control means, and any position displayed by the formula display means is designated. designated as position result, an identification displayed mathematical expression components in the same color as the designated color by the equation partial color identifying display control means, and color formulas portion sticking means you paste to the designated position,
A mathematical expression display control device comprising: In the mathematical expression display control device according to claim 1,
The formula display control apparatus, wherein the color formula part pasting means identifies and displays a formula constituent part pasted at the designated position in the designated color. In the mathematical expression display control device according to claim 1 or 2 ,
The mathematical expression partial color identification display control means includes:
Of the mathematical formulas displayed on the mathematical formula display means, each mathematical formula component having the same value as the mathematical formula constituent portion stored by the mathematical formula / color correspondence storage control means is converted into the mathematical formula constituent portion by the mathematical formula / color correspondence storage control means. A mathematical expression display control device for identifying and displaying in a color stored in association with each other. In the mathematical expression display control device according to claim 2 or 3 ,
Formula correction means for correcting the formula displayed by the formula display means based on a user operation;
When the formula component identified and displayed on the formula display means is corrected by the formula correction means, the formula component before correction and the corrected formula component are not the same value. cancels the identification of the mathematical expression component, equation display control device, characterized in that it comprises a modified mathematical expression part identification releasing means to update the display contents on the equation display means. In the mathematical expression display control device according to any one of claims 1 to 4 ,
A color chart display means for displaying the color chart;
Number Expression and color corresponding storage control means, based on a user operation, the formula display control apparatus characterized by specifying any of the color in the color chart. The mathematical expression display control device according to claim 5 .
It said color formulas portion sticking means, based on the user operation, the formula display control apparatus characterized by specifying the designated color any color within the color chart. In the mathematical expression display control device according to any one of claims 1 to 6 ,
Formula correction means for correcting the formula displayed by the formula display means based on a user operation,
The mathematical expression / color correspondence storage control means includes:
When the mathematical expression component identified and displayed by the mathematical expression display means is modified by the mathematical expression modification means, the modified mathematical expression composition part is corrected by the mathematical expression / color correspondence information storage control means among the plurality of colors. A mathematical expression display control device, which stores a color corresponding to a color different from a corresponding color stored in association with a mathematical expression component. In the mathematical expression display control device according to any one of claims 1 to 7 ,
Variable detection means for detecting a variable connected by an equal sign to a mathematical expression component stored by the mathematical expression / color correspondence storage control means from the mathematical expression displayed by the mathematical expression display means,
The mathematical expression / color correspondence storage control means includes:
When a variable connected with an equal sign to the mathematical expression component stored by the mathematical expression / color correspondence storage control means is detected by the variable detection means, the variable is stored in association with the mathematical expression component,
The mathematical expression partial color identification display control means includes:
Of the formulas displayed on the formula display means, the variables stored in association with the formula constituent parts by the formula / color correspondence storage control means are associated with the formula constituent parts by the formula / color correspondence storage control means. A mathematical expression display control device for identifying and displaying each of the stored colors. In the mathematical expression display control device according to claim 8 ,
Based on a user operation, a formula component specifying unit that specifies any formula component identified and displayed by the formula display unit;
When a variable is stored in association with the formula / color correspondence storage control unit with respect to the formula component specified by the formula component specifying unit, the formula component is replaced with the variable and displayed. A mathematical expression display control device comprising a mathematical expression component / variable replacement means. In the mathematical expression display control device according to claim 8 or 9 ,
Variable designation means for designating any variable identified and displayed by the mathematical expression display means based on a user operation;
A variable / formula component replacement unit that displays the variable specified by the variable specification unit by replacing the variable with a formula component stored in association with the variable by the formula / color correspondence storage control unit; A mathematical expression display control device. A computer having a formula display means to display the number equation,
Based on a user operation above, and any of formulas components in equation displayed by the mathematical expression display means, specifying the one color among the plurality of colors, the front SL specified by the formula components Formula / color correspondence storage control function for performing control to store the specified color in association with each other,
Among the formulas displayed on the formula display means, a formula part color identification display control function for identifying and displaying the designated formula component part with the designated color;
In response to a user operation, any one of the colors stored in association with the formula component is designated as the designated color by the formula / color correspondence storage control means , and any position displayed by the formula display means is designated. designated as position result, the same color as the designated color identification displayed mathematical expression component by the equation partial color identifying display control means, and color formulas portion sticking function to paste the designated position,
A program characterized by realizing.

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