JP2012053547A - Electronic calculator and program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To immediately obtain a calculation result while allowing recognition of a calculation process.SOLUTION: A scientific calculator 1 includes: a key input unit 14 which inputs, as an input expression, a mathematical expression including unary operation sections comprising unary operators and operands on the basis of user's operation; a CPU 11 which simplifies the input expression by arithmetic to calculate an output expression as a calculation result in a form including at least one unary operation section; and a display unit 15 which displays the input expression and the output expression. The CPU 11 causes the display unit 15 to display output expression-side operands included in the output expression, out of operands of unary operation sections displayed by the display unit 15, in different display modes respectively. The CPU 11 causes the display unit 15 to display input expression-side operands included in the input expression and used for arithmetic as calculation sources of output expression-side operands, out of the operands of unary operation sections displayed by the display unit 15, in display modes corresponding to the output expression-side operands.

Description

  The present invention relates to an electronic computer and a program.

  2. Description of the Related Art Conventionally, an electronic computer having a calculation function may perform an operation on an input mathematical formula and output the computation result in the form of a mathematical formula. In this case, for example, when a mathematical expression “√7 (√2 + √5)” is input, the calculation result “√35 + √14” is output.

  By the way, when the calculation result is simply output in this way, it is not known in which calculation process the calculation result is obtained, and it is unfriendly especially for a learning beginner.

  Therefore, in recent electronic computers, intermediate solutions are sequentially displayed according to the calculation process (for example, see Patent Document 1).

Japanese Patent Application Laid-Open No. 7-200483

  However, in the method of sequentially displaying the intermediate solution in the calculation process, it takes time to display the final calculation result, or the content to be displayed increases and it takes time to find the final calculation result. A new problem arises.

  An object of the present invention is to provide an electronic computer and a program capable of immediately obtaining a calculation result while making it possible to grasp the calculation process.

In order to solve the above problems, the invention according to claim 1 is an electronic computer,
Formula input means for inputting, as an input formula, a formula including at least one unary operation unit including a unary operator and an operand based on a user operation;
Calculation means for simplifying the input expression by calculation and calculating an output expression as a calculation result in a form including at least one unary operation unit;
Display means for displaying the input expression and the output expression;
Among the operands of the unary operation unit displayed by the display means, output expression display mode control means for causing the display means to display output expression side operands included in the output expression, respectively, in different display modes;
Of the operands of the unary operation unit displayed by the display means, the input expression side operand included in the input expression and used for the calculation as the calculation source of the output expression side operand corresponds to the output expression side operand. Input type display mode control means for displaying on the display means in a display mode;
It is characterized by providing.

The invention according to claim 2 is the electronic computer according to claim 1,
The input type display mode control means includes:
When the input expression-side operand is used as a calculation source of a plurality of output expression-side operands, the input expression-side operand is displayed in a display mode corresponding to each of the plurality of output expression-side operands. It is characterized by.

The invention according to claim 3 is the electronic computer according to claim 2,
The output type display mode control means includes:
The output expression side operands included in the output expression are displayed on the display means in different display colors, respectively.
The input type display mode control means includes:
When the input expression side operand is used as a calculation source of the plurality of output expression side operands in the operation, the input expression side operand is set to a display color obtained by mixing the display colors of the plurality of output expression side operands. It is characterized by being displayed.

The invention according to claim 4 is the electronic computer according to any one of claims 1 to 3,
The unary operator is a root sign.

The invention according to claim 5 is a program,
In a computer provided with a display means,
A mathematical expression input function for inputting, as an input expression, a mathematical expression including at least one unary operation unit including a unary operator and an operand based on a user operation;
A calculation function for simplifying the input expression by calculation and calculating an output expression as a calculation result in a form including at least one unary operation unit;
Display control means for displaying the input expression and the output expression on the display means;
Among the operands of the unary operation unit displayed by the display means, an output expression display mode control function for causing the display means to display output expression side operands included in the output expression, respectively, in different display forms;
Of the operands of the unary operation unit displayed by the display means, the input expression side operand included in the input expression and used for the calculation as the calculation source of the output expression side operand corresponds to the output expression side operand. An input type display mode control function to be displayed on the display means in a display mode;
It is characterized by realizing.

According to the present invention, when a mathematical expression including at least one unary operator is input as an input expression based on a user operation, the input expression is simplified by calculation and is calculated in a form including at least one unary operator. Since the output formula as a result is calculated and the input formula and output formula are displayed, it may take time to display the final calculation result, unlike the conventional case of sequentially displaying the intermediate solution of the calculation process. Since the display content increases, it is prevented that it takes time to find the final calculation result, and the calculation result can be obtained immediately.
In addition, among the operands of unary operators, the output expression side operands included in the output expression are displayed in different display forms, and the input expression side included in the input expression and used as the calculation source of the output expression side operand Since the operand is displayed in a display form corresponding to the output-expression-side operand, it is possible to grasp which part of the input expression is calculated for each part of the output expression. Therefore, it is possible to grasp in which calculation process the calculation result is obtained.

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 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 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.

[1.1 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 them, the numeric keypad 20 is a key for receiving a numerical value input operation, and the operation symbol key 21 is an arithmetic operation operator, parentheses, fractional line, constant (circumference ratio “π”, light velocity “c”, etc.). It is a key that receives input operations such as. The operation symbol key 21 can also receive input operations of unary operators such as a root sign (√), a logarithmic symbol, and a trigonometric function symbol.

  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 the figure, the scientific calculator 1 includes a key input unit 14, a display unit 15, a RAM (Random Access Memory) 12, a storage unit 13, and a CPU (Central Processing Unit) 11. Has been.

  The key input unit 14 includes the input key group 2 described above, and outputs an operation signal corresponding to the pressed key 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. Further, the display unit 15 includes a touch panel 30 provided integrally with the display 3, and outputs contact position information of the input pen with respect to the display screen to 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 an input type storage area 120, an output type storage area 121, a takeover information storage area 122, and the like as work areas.

  In the input formula storage area 120, mathematical formulas input in calculation processing (see FIG. 3) described later are stored.

  The output formula storage area 121 stores an output formula as a calculation result calculated in a calculation process (see FIG. 3) described later.

  The input expression storage area 120 and the output expression storage area 121 can store one or more unary operation units each including a unary operator and an operand in the input expression and the output expression.

  In the takeover information storage area 122, information about which unary operation unit contents in the input expression are transferred to the unary operation unit of the output expression in the calculation process (see FIG. 3) described later, in other words, the calculation source Information (hereinafter referred to as takeover information) indicating the correspondence between the unary operation unit and the unary operation unit of the calculation result is stored for each unary operation unit of the input expression.

  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 and a color assignment order table 131.

  The calculation program 130 is a program for causing the CPU 11 to execute calculation processing (see FIG. 3) described later.

  The color assignment order table 131 is a table in which display colors to be assigned to the operands of the unary operation unit in calculation processing (see FIG. 3) described later are stored in the order of assignment. In the present embodiment, the first and second displays are displayed. “Blue” and “Red” are stored as colors.

  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. Execute.

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

  FIG. 3 is a flowchart for explaining the operation of the calculation process. This calculation process is a result of the calculation program 130 being read from the storage unit 13 and appropriately expanded in the RAM 12 when a user inputs a calculation process execution instruction via the touch panel 30 or the key input unit 14. The calculation program 130 is executed in cooperation with the CPU 11.

  As shown in this figure, in the calculation process, when the user first operates the input key group 2 and inputs a mathematical expression as an input expression (step S1), the CPU 11 stores the input expression in the input expression storage area 120. And the input formula is displayed on the display 3. Then, it is determined whether or not a calculation execution instruction is performed (step S2). When it is determined that the calculation is not performed (step S2; No), the process proceeds to step S1.

  If it is determined in step S2 that an operation execution instruction has been issued (step S2; Yes), the CPU 11 simplifies the input expression by calculation and calculates an output expression as the calculation result. After being stored in the output expression storage area 121, it is determined whether or not at least one unary operation unit is included in each of these input expressions and output expressions (step S3).

  When it is determined in step S3 that the unary operation unit is not included in at least one of the input expression and the output expression (step S3; No), the CPU 11 displays the input expression and the output expression as the operation result. 3 (step S4), the calculation process is terminated.

  If it is determined in step S3 that the input expression and the output expression each include at least one unary operation unit (step S3; Yes), the CPU 11 determines that the contents of any unary operation unit in the input expression are output expressions. The takeover information as to whether or not it has been taken over by the unary operation unit is stored in the takeover information storage region 122 for each input type unary operation unit (step S5).

  Next, the CPU 11 sets a display color according to the order in the color assignment order table 131 for the operands of each unary operation unit included in the output expression (step S6).

  Next, the CPU 11 sets any unary operation unit included in the input expression as a processing target (step S11), and the unary associated with the unary operation unit to be processed in the takeover information in the takeover information storage area 122. It is determined whether or not the operation unit exists in the output expression, that is, whether or not the unary operation unit calculated based on the unary operation unit to be processed exists in the output expression (step S12).

  If it is determined in step S12 that the unary operation unit associated with the unary operation unit to be processed does not exist in the output expression (step S12; No), the CPU 11 determines the operand of the unary operation unit to be processed. The display color is set to “default color” (step S13), and the process proceeds to step S21 described later. Here, the “default color” is a normal color used when displaying the mathematical formula, and the default color is used when no color is specified, such as when the input formula input in step S1 is displayed. Usually, an inconspicuous color such as black is used as the “specified color”.

  Further, when it is determined in step S12 that the unary operation unit associated with the unary operation unit to be processed exists in the output equation (step S12; Yes), the CPU 11 selects such a unary operation unit (processing object). It is determined whether or not there are a plurality of unary operation units associated with the unary operation unit in the output expression (step S15).

  If it is determined in step S15 that there are not a plurality of unary operation units associated with the unary operation unit to be processed in the output expression, that is, only one exists (step S15; No), the CPU 11 The display color of the operand in the unary operation unit is set to the same color as the display color of the operand in the unary operation unit in the output expression (step S16), and the process proceeds to step S21 described later.

  If it is determined in step S15 that there are a plurality of unary operation units associated with the unary operation unit to be processed in the output expression (step S15; Yes), the CPU 11 performs an operand in the unary operation unit to be processed. Is set to a mixed color of the display colors of the operands in the unary operation unit in these output expressions (step S17).

  If the operands included in the input expression are used in the calculation as the calculation source of the operand of the output expression by the above steps S13, S16, and S17, the operands of the input expression are respectively converted to the operands of the output expression. It will be displayed in the corresponding display color. Furthermore, when the operand of the input expression is used in the calculation as a calculation source of the plurality of operands of the output expression, the operand of the input expression is displayed in a mixed color of each of the plurality of operands in the output expression. Become.

  Next, the CPU 11 determines whether or not a unary operation unit that is not set as a processing target still exists in the input expression (step S21), and if it is determined that it exists (step S21; Yes), The process proceeds to step S11.

  Further, when it is determined in step S21 that the unary arithmetic unit not set as the processing target does not exist in the input formula (step S21; No), the CPU 11 displays the input formula and the output formula as the calculation result. 3, the operands in each unary operation unit of the input expression and output expression are displayed in the set display color (step S <b> 22), and the calculation process is terminated. In step S22, if the display color of the operand in the input expression is a mixed color of the display colors of the plurality of operands in the output expression, the CPU 11 mixes the display colors of the operands in the output expression in dot units. The input expression operand may be displayed, or the input expression operand may be displayed in a display color preset as an intermediate color between the display colors of the output expression operand.

[1.4 Operation example]
Next, the operation of the scientific calculator 1 described above will be specifically described with reference to the drawings. However, in the following operation example, the unary operators and operands of the unary operation unit are displayed in the same color and are displayed with the same color underlined. In the drawing, the area surrounded by a broken line on the display screen of the display 3 is a color corresponding to the area (“B”: blue (Blue), “R”: red (Red), “P”: Purple indicates that characters in the area are displayed.

(Operation example 1)
First, as shown in FIG. 4A, when the user inputs the mathematical expression “√12” as an input expression (step S1), the input expression “√12” is displayed. Subsequently, when the user gives an instruction to execute the calculation (step S2; Yes), the input expression “√12” is simplified by the calculation, and the output expression “2√3” as the calculation result is calculated. It is determined that at least one unary operation unit is included in each of “√12” and the output formula “2√3” (step S3; Yes).

  Next, takeover information indicating that the content of the unary operation unit “√12” in the input expression “√12” is taken over by the unary operation unit “√3” of the output equation “2√3” is stored in the takeover information storage area 122. After being stored (step S5), the display color “blue” is set for the unary operation unit “√3” included in the output equation “2√3” (step S6).

  Next, after the unary operation unit “√12” included in the input expression “√12” is set as the processing target (step S11), the unary operation unit associated with the unary operation unit “√12” to be processed It is determined that “√3” is present in the output expression “2√3” (step S12; Yes), and the display color of the processing target unary operation unit “√12” is the unary in the output expression “2√3”. The display color “blue” of the calculation unit “√3” is set (step S16).

  Then, as shown in FIG. 4B, an input expression “√12” and an output expression “2√3” are displayed, and unary arithmetic units “√12” and “√3” included therein are displayed. The color “blue” is displayed (step S22).

(Operation example 2)
First, as shown in FIG. 5A, when the user inputs the mathematical expression “√45−√8 + √20−√50” as an input formula (step S1), the input formula “√45−√8 + √20−√50”. Is displayed. Subsequently, when the user instructs to execute the calculation (step S2; Yes), the input expression “√45−√8 + √20−√50” is simplified by the calculation and the output expression “5√5−5” as the calculation result is obtained. 7√2 ”is calculated, and it is determined that the input expression“ √45−√8 + √20−√50 ”and the output expression“ 5√5-7√2 ”each include at least one unary operation unit. (Step S3; Yes).

  Next, the contents of the unary operation units “√45” and “√20” in the input expression “√45−√8 + √20−√50” are the unary operation unit “5” of the output expression “5√5-7√2”. Successive information indicating that the contents of the unary operation units “√8” and “√50” are inherited by the unary operation unit “7√2” of the output formula “5√5-7√2”. Is stored in the takeover information storage area 122 (step S5), the display color “blue” is applied to the unary operation units “√5” and “√2” included in the output formula “5√5-7√2”. , “Red” is set (step S6).

  Next, after the unary operation unit “√45” included in the input expression “√45−√8 + √20−√50” is set as the processing target (step S11), the unary operation unit “√45” to be processed is set. Is determined to exist in the output expression (step S12; Yes), and the display color of the processing target unary operation section “√45” is the unary operation section in the output expression. The display color “blue” of “√5” is set (step S16).

  Next, after the unary operation unit “√8” included in the input expression “√45−√8 + √20−√50” is set as the processing target (step S11), the unary operation unit “√8” to be processed is set. Is determined to be present in the output expression (step S12; Yes), and the display color of the processing target unary operation section “√8” is the unary operation section in the output expression. The display color “√2” is set to “red” (step S16).

  Next, after the unary operation unit “√20” included in the input expression “√45−√8 + √20−√50” is set as the processing target (step S11), the unary operation unit “√20” to be processed is set. Is determined to be present in the output expression (step S12; Yes), and the display color of the processing target unary operation section “√20” is the unary operation section in the output expression. The display color “blue” of “√5” is set (step S16).

  Next, after the unary operation unit “√50” included in the input expression “√45−√8 + √20−√50” is set as the processing target (step S11), the unary operation unit “√50” to be processed is set. Is determined to be present in the output expression (step S12; Yes), and the display color of the processing target unary operation section “√50” is the unary operation section in the output expression. The display color “√2” is set to “red” (step S16).

  Then, as shown in FIG. 5B, an input expression “√45−√8 + √20−√50” and an output expression “5√5-7√2” are displayed, and unary operations included in these expressions are displayed. The units “√45”, “√20”, and “√5” are displayed in the display color “blue”, and the unary operation units “√8”, “√50”, and “√2” are displayed in the display color “red”. (Step S22).

(Operation example 3)
First, as shown in FIG. 6A, when the user inputs the mathematical expression “√12 × √63” as an input formula (step S1), the input formula “√12 × √63” is displayed. Subsequently, when the user instructs to execute the calculation (Step S2; Yes), the input expression “√12 × √63” is simplified by the calculation, and the output expression “6√21” as the calculation result is calculated. It is determined that at least one unary operation unit is included in the input expression “√12 × √63” and the output expression “6√21” (step S3; Yes).

  Next, it is assumed that the contents of the unary operation units “√12” and “√63” in the input expression “√12 × √63” are inherited by the unary operation unit “√21” in the output expression “6√21”. After the information is stored in the takeover information storage area 122 (step S5), the display color “blue” is set for the unary operation unit “√21” included in the output expression “6√21” (step S6). .

  Next, after the unary operation unit “√12” included in the input expression “√12 × √63” is set as the processing target (step S11), it is associated with the unary operation unit “√12” to be processed. It is determined that the unary operation unit “√21” exists in the output expression “6√21” (step S12; Yes), and the display color of the unary operation unit “√12” to be processed is the output expression “6√21”. The display color “blue” of the unary operation unit “√21” is set (step S16).

  Next, after the unary operation unit “√63” included in the input expression “√12 × √63” is set as the processing target (step S11), it is associated with the unary operation unit “√63” to be processed. It is determined that the unary operation unit “√21” exists in the output expression “6√21” (step S12; Yes), and the display color of the unary operation unit “√63” to be processed is the output expression “6√21”. The display color “blue” of the unary operation unit “√21” is set (step S16).

  Then, as shown in FIG. 6B, the input formula “√12 × √63” and the output formula “6√21” are displayed, and the unary arithmetic units “√12” and “√63” included therein are displayed. ”And“ √21 ”are displayed in the display color“ blue ”(step S22).

(Operation example 4)
First, as shown in FIG. 7A, when the user inputs the mathematical expression “√7 (√2 + √5)” as an input expression (step S1), the input expression “√7 (√2 + √5)” is displayed. The Subsequently, when the user instructs to execute the calculation (step S2; Yes), the input expression “√7 (√2 + √5)” is simplified by the calculation, and the output expression “√35 + √14” as the calculation result is obtained. It is determined that at least one unary operation unit is included in the input expression “√7 (√2 + √5)” and the output expression “√35 + √14” (step S3; Yes).

  Next, the contents of the unary operation part “√7” in the input expression “√7 (√2 + √5)” are transferred to the unary operation parts “√35” and “√14” in the output expression “√35 + √14”. The contents of the unary operation unit “√2” are carried over to the unary operation unit “√14” of the output formula “√35 + √14”, and the contents of the unary operation unit “√5” of the output expression “√35 + √14” After the takeover information that has been taken over by the unary operation unit “√35” is stored in the takeover information storage area 122 (step S5), the unary operation unit “√35” included in the output expression “√35 + √14”, Display colors “blue” and “red” are set for “√14” (step S6).

  Next, after the unary operation unit “√7” included in the input expression “√7 (√2 + √5)” is set as the processing target (step S11), it corresponds to the unary operation unit “√7” to be processed. It is determined that the attached unary operation units “√35” and “√14” exist in the output expression “√35 + √14” (step S12; Yes), and the display color of the unary operation unit “√7” to be processed Is set to the mixed color “purple” of the display colors “blue” and “red” of the unary operation units “√35” and “√14” in the output formula “√35 + √14” (step S17).

  Next, after the unary operation unit “√2” included in the input expression “√7 (√2 + √5)” is set as the processing target (step S11), it corresponds to the unary operation unit “√2” to be processed. It is determined that the attached unary operation unit “√14” is present in the output expression “√35 + √14” (step S12; Yes), and the display color of the unary operation unit “√2” to be processed is the output expression “ The display color “red” of the unary operation unit “√14” within √35 + √14 ”is set (step S16).

  Next, after the unary operation unit “√5” included in the input expression “√7 (√2 + √5)” is set as the processing target (step S11), it corresponds to the unary operation unit “√5” to be processed. It is determined that the attached unary operation unit “√35” exists in the output expression “√35 + √14” (step S12; Yes), and the display color of the unary operation unit “√5” to be processed is changed to the output expression “ The display color “blue” of the unary operation unit “√35” within √35 + √14 ”is set (step S16).

  Then, as shown in FIG. 7B, the input expression “√7 (√2 + √5)” and the output expression “√35 + √14” are displayed, and the unary operation unit “√5” included therein is displayed. , “√35” is displayed in the display color “blue”, the unary operation units “√2” and “√14” are displayed in the display color “red”, and the unary operation unit “√7” is displayed in the “purple” color. Is displayed (step S22).

(Operation example 5)
First, as shown in FIG. 8A, when the user inputs the mathematical expression “√9 × 2√3” as an input formula (step S1), the input formula “√9 × 2√3” is displayed. Subsequently, when the user instructs to execute the calculation (step S2; Yes), the input expression “√9 × 2√3” is simplified by the calculation, and the output expression “6√3” is calculated as the calculation result. Then, it is determined that at least one unary operation unit is included in each of the input expression “√9 × 2√3” and the output expression “6√3” (step S3; Yes).

  Next, the takeover information indicating that the content of the unary operation unit “√3” in the input expression “√9 × 2√3” is transferred to the unary operation unit “√3” of the output equation “6√3” is the takeover information. After being stored in the storage area 122 (step S5), the display color “blue” is set for the unary operation unit “√3” included in the output expression “6√3” (step S6).

  Next, after the unary operation unit “√9” included in the input expression “√9 × 2√3” is set as the processing target (step S11), it is associated with the unary operation unit “√9” to be processed. It is determined that the unary arithmetic unit does not exist in the output formula “6√3” (step S12; No), and the display color of the unary arithmetic unit “√9” to be processed is set to “default color” (step S12). S13).

  Next, after the unary operation unit “√3” included in the input expression “√9 × 2√3” is set as the processing target (step S11), it is associated with the unary operation unit “√3” to be processed. It is determined that the unary operation unit “√3” is present in the output expression “6√3” (step S12; Yes), and the display color of the unary operation unit “√3” to be processed is the output expression “6√3”. The display color “blue” of the unary operation unit “√3” in “” is set (step S16).

  As shown in FIG. 8B, the input expression “√9 × 2√3” and the output expression “6√3” are displayed, and the unary operation unit “√3” included in these is displayed in the display color. Displayed in “blue” (step S22).

(Operation example 6)
First, as shown in FIG. 9A, when the user inputs the mathematical expression “√8 + √5-2-22 + 2 + √3” as an input expression (step S1), the input expression “√8 + √5-2-2√2 + 2√3”. Is displayed. Subsequently, when the user instructs to execute the calculation (step S2; Yes), the input expression “√8 + √5-2-2√2 + 2√3” is simplified by the calculation and the output expression “√5 + 2√3” is obtained as the calculation result. ”Is calculated, and it is determined that the input expression“ √8 + √5-2-2√2 + 2√3 ”and the output expression“ √5 + 2√3 ”each include at least one unary operation unit (step S3; Yes). .

  Next, the contents of the unary operation unit “√5” in the input expression “√8 + √5-2-22 + 2 + √3” are transferred to the unary operation unit “√5” of the output expression “√5 + 2√3”, and the input expression Inheritance information is that the content of the unary operation unit “√3” in “√8 + √5-2√2 + 2√3” is inherited by the unary operation unit “√3” of the output expression “√5 + 2√3” After being stored in the storage area 122 (step S5), the display colors “blue” and “red” are set for the unary operation units “√5” and “√3” included in the output formula “√5 + 2√3”. (Step S6).

Next, after the unary operation unit “√8” included in the input expression “√8 + √5-2-22 + 2 + √3” is set as the processing target (step S11), the unary operation unit “√8” to be processed is set. Is determined not to exist in the output expression “√5 + 2√3” (step S12; No), and the display color of the processing target unary operation unit “√8” is set to “default color”. It is set (step S13).
Similarly, the display color of the unary operation unit “√2” included in “√8 + √5-2-22 + 2 + √3” is set to “default color” (step S13).

  Next, after the unary operation unit “√5” included in the input expression “√8 + √5-2-22 + 2 + √3” is set as the processing target (step S11), the unary operation unit “√5” to be processed is set. Is determined to exist in the output expression “√5 + 2√3” (step S12; Yes), and the display color of the processing target unary operation unit “√5” is output. The display color “blue” of the unary operation unit “√5” in the expression “√5 + 2√3” is set (step S16).

  Next, after the unary operation unit “√3” included in the input expression “√8 + √5-2-22 + 2 + √3” is set as the processing target (step S11), the unary operation unit “√3” to be processed Is determined to exist in the output expression “√5 + 2√3” (step S12; Yes), and the display color of the unary operation unit “√3” to be processed is output. The display color “red” of the unary operation unit “√3” in the expression “√5 + 2√3” is set (step S16).

  Then, as shown in FIG. 9B, an input expression “√8 + √5−2√2 + 2√3” and an output expression “√5 + 2√3” are displayed, and a unary operation unit “√” included therein is displayed. 5 ”is displayed in the display color“ blue ”, and the unary operation unit“ √3 ”is displayed in the display color“ red ”(step S22).

(Operation example 7)
First, as shown in FIG. 10A, when the user inputs the mathematical expression “log2 + log3” as an input expression (step S1), the input expression “log2 + log3” is displayed. Subsequently, when the user issues an operation execution instruction (step S2; Yes), the input expression “log2 + log3” is simplified by the operation, and the output expression “log6” as the operation result is calculated, and the input expression “log2 + log3” and It is determined that the output expression “log6” includes at least one unary operation unit (step S3; Yes).

  Next, the takeover information that the contents of the unary operation units “log2” and “log3” in the input expression “log2 + log3” have been taken over by the unary operation unit “log6” of the output expression “log6” is stored in the takeover information storage area 122 (Step S5), the display color “blue” is set for the unary operation unit “log6” included in the output expression “log6” (Step S6).

  Next, after the unary operation unit “log2” included in the input expression “log2 + log3” is set as the processing target (step S11), the unary operation unit “log6” associated with the processing target unary operation unit “log2” Is present in the output expression “log6” (step S12; Yes), the display color of the unary operation unit “log2” to be processed is the display color “of the unary operation unit“ log6 ”in the output expression“ log6 ”. “Blue” is set (step S16).

  Next, after the unary operation unit “log3” included in the input expression “log2 + log3” is set as the processing target (step S11), the unary operation unit “log6” associated with the processing target unary operation unit “log3” Is present in the output expression “log6” (step S12; Yes), the display color of the unary operation unit “log3” to be processed is the display color “of the unary operation unit“ log6 ”in the output expression“ log6 ”. “Blue” is set (step S16).

  Then, as shown in FIG. 10B, the input expression “log2 + log3” and the output expression “log6” are displayed, and the unary operation units “log2”, “log3”, “log6” included therein are displayed in display colors. Displayed in “blue” (step S22).

(Operation example 8)
First, as shown in FIG. 11A, when the user inputs the mathematical expression “sin (π / 4) + 3sin (π / 4)” as an input expression (step S1), the input expression “sin (π / 4) + 3sin ( π / 4) ”is displayed. Subsequently, when the user instructs to execute the calculation (step S2; Yes), the input expression “sin (π / 4) + 3sin (π / 4)” is simplified by the calculation and the output expression “4sin ( π / 4) ”is calculated, and it is determined that the input expression“ sin (π / 4) + 3sin (π / 4) ”and the output expression“ 4sin (π / 4) ”each include at least one unary operation unit. (Step S3; Yes).

  Next, the content of the unary operation unit “sin (π / 4)” in the input expression “sin (π / 4) + 3sin (π / 4)” is the unary operation unit “sin” of the output expression “4sin (π / 4)”. After the takeover information that has been taken over by (π / 4) ”is stored in the takeover information storage area 122 (step S5), the unary operation unit“ sin (π) included in the output expression “4sin (π / 4)” / 4) ", the display color" blue "is set (step S6).

  Next, after the first unary operation unit “sin (π / 4)” included in the input expression “sin (π / 4) + 3sin (π / 4)” is set as a processing target (step S11), It is determined that the unary operation unit “sin (π / 4)” associated with the unary operation unit “sin (π / 4)” to be processed exists in the output expression “4sin (π / 4)” (step S12). Yes), the display color of the unary operation unit “sin (π / 4)” to be processed is the display color of the unary operation unit “sin (π / 4)” in the output expression “4sin (π / 4)”. “Blue” is set (step S16).

  Next, after the second unary operation unit “sin (π / 4)” included in the input expression “sin (π / 4) + 3sin (π / 4)” is set as a processing target (step S11), It is determined that the unary operation unit “sin (π / 4)” associated with the unary operation unit “sin (π / 4)” to be processed exists in the output expression “4sin (π / 4)” (step S12). Yes), the display color of the unary operation unit “sin (π / 4)” to be processed is the display color of the unary operation unit “sin (π / 4)” in the output expression “4sin (π / 4)”. “Blue” is set (step S16).

  Then, as shown in FIG. 11 (b), the input expression “sin (π / 4) + 3sin (π / 4)” and the output expression “4sin (π / 4)” are displayed, and the unary included in them is displayed. The calculation unit “sin (π / 4)” is displayed in the display color “blue” (step S22).

As described above, according to the present embodiment, as shown in step S22 of FIG. 3, FIGS. 4 to 11, and the like, a mathematical expression including at least one unary operator is input as an input expression based on a user operation. And the input expression is simplified by calculation, the output expression as the calculation result is calculated in a form including at least one unary operator, and the input expression and output expression are displayed, so the intermediate solution of the calculation process is displayed in order Unlike the conventional case, it takes time to display the final calculation result, and it is prevented that it takes time to find the final calculation result due to the increase in display contents. Can be obtained immediately.
Also, as shown in steps S6, S16, S17 of FIG. 3 and FIGS. 4 to 11, etc., among the operands of the unary operator, the output expression side operands included in the output expression are displayed in different display modes, The input expression-side operand that is included in the input expression and used as the calculation source of the output-expression-side operand is displayed in a display mode corresponding to the output-expression-side operand. It is possible to grasp whether it was calculated due to the portion of. Therefore, it is possible to grasp in which calculation process the calculation result is obtained.

  Also, as shown in step S17 of FIG. 3, FIG. 7B, etc., when the input expression side operand is used in the calculation as the calculation source of the plurality of output expression side operands, the plurality of output expressions Because the input expression side operand is displayed in a display mode corresponding to each of the side operands, even if a part of the output expression is calculated due to multiple parts of the input expression, the correspondence is grasped can do. Therefore, it is possible to reliably grasp in which calculation process the calculation result is obtained.

  Also, as shown in step S17 of FIG. 3, FIG. 7B, etc., the output expression side operands included in the output expression are displayed in different display colors, and the input expression side operand is a plurality of output expression side operands. When used as a calculation source in an operation, the input expression-side operand is displayed in a display color that is a mixture of the display colors of each of the plurality of output-expression-side operands. In the case where it is calculated due to this part, the correspondence can be easily grasped. Therefore, it is possible to reliably and easily grasp in which calculation process the calculation result is obtained.

  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, although the electronic calculator according to the present invention has been described as the scientific calculator 1, the present invention is not limited to such a product, but a mobile phone, a personal computer, a PDA (Personal Digital Assistant), a game machine, etc. 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, the operands of the unary operation unit included in the output expression have been described as being displayed in different display colors. However, each operand of the output expression only needs to be displayed in a different display mode. For example, each operand of the output expression May be displayed in different typefaces. In this case, when the operand on the input expression side is used as the calculation source of the plurality of operands on the output expression side, the input expression side operand is displayed in a display mode corresponding to each of the plurality of operands on the output expression side. Is displayed.

1 Scientific calculator 2 Input key group 3 Display 11 CPU
12 RAM
13 Storage Unit 14 Key Input Unit 15 Display Unit 130 Calculation Program

Claims (5)

Formula input means for inputting, as an input formula, a formula including at least one unary operation unit including a unary operator and an operand based on a user operation;
Calculation means for simplifying the input expression by calculation and calculating an output expression as a calculation result in a form including at least one unary operation unit;
Display means for displaying the input expression and the output expression;
Among the operands of the unary operation unit displayed by the display means, output expression display mode control means for causing the display means to display output expression side operands included in the output expression, respectively, in different display modes;
Of the operands of the unary operation unit displayed by the display means, the input expression side operand included in the input expression and used for the calculation as the calculation source of the output expression side operand corresponds to the output expression side operand. Input type display mode control means for displaying on the display means in a display mode;
An electronic computer comprising: The electronic computer according to claim 1,
The input type display mode control means includes:
When the input expression-side operand is used as a calculation source of a plurality of output expression-side operands, the input expression-side operand is displayed in a display mode corresponding to each of the plurality of output expression-side operands. An electronic computer characterized by The electronic computer according to claim 2, wherein
The output type display mode control means includes:
The output expression side operands included in the output expression are displayed on the display means in different display colors, respectively.
The input type display mode control means includes:
When the input expression side operand is used as a calculation source of the plurality of output expression side operands in the operation, the input expression side operand is set to a display color obtained by mixing the display colors of the plurality of output expression side operands. An electronic computer characterized by being displayed. In the electronic computer as described in any one of Claims 1-3,
An electronic computer, wherein the unary operator is a root sign. In a computer provided with a display means,
A mathematical expression input function for inputting, as an input expression, a mathematical expression including at least one unary operation unit including a unary operator and an operand based on a user operation;
A calculation function for simplifying the input expression by calculation and calculating an output expression as a calculation result in a form including at least one unary operation unit;
Display control means for displaying the input expression and the output expression on the display means;
Among the operands of the unary operation unit displayed by the display means, an output expression display mode control function for causing the display means to display output expression side operands included in the output expression, respectively, in different display forms;
Of the operands of the unary operation unit displayed by the display means, the input expression side operand included in the input expression and used for the calculation as the calculation source of the output expression side operand corresponds to the output expression side operand. An input type display mode control function to be displayed on the display means in a display mode;
A program characterized by realizing.

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