JP3392583B2 - calculator - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a computer capable of obtaining a solution of each of a plurality of mathematical expressions and a sum of the solutions and a subtotal of a specific range.

[0002]

2. Description of the Related Art Desktop calculators, electronic organizers, personal digital assistants,
Small electronic devices such as personal computers, word processors, POS terminals, and electronic cash registers generally have the following calculation functions.

For example, in Japanese Patent Application No. 5-209557 filed by the applicant of the present application, a plurality of lines of the display portion and a line designated by the cursor in the plurality of lines of the display portion are input as input edit lines. Means for displaying the formula input or edited in the edit line, and when the cursor is moved to the upper line or the lower line, calculate the formula displayed in the input edit line before the cursor movement, Means for displaying the solution on the right side of the formula in the line, further, when the cursor is moved to the upper line or the lower line, the sum of the solutions of all input edited formulas, Means for displaying the total sum of the solutions in the bottom line of the display units of the plurality of lines is provided.

[0004]

In everyday calculations, it is often necessary to produce subtotals. FIG. 3 is an example thereof. However, this mathematical expression is expressed as the numerical value of the first term.

When the calculation of FIG. 3 is performed at one time by using the above-mentioned computer ,,, 13 can be obtained as a total, but a subtotal of 10, ..., 10 cannot be obtained.
In order to obtain a subtotal with such a computer, it was necessary to separately calculate each subtotal section, and then add the subtotals again to give a grand total.

It is an object of the present invention to provide a computer capable of producing a subtotal of an arbitrary portion in the middle of a series of calculations for obtaining a total.

The present invention is a computer for inputting a plurality of mathematical expressions, accumulating solutions of the input mathematical expressions to calculate a total, and displaying the total in a total display area. Storage means, range designating means for designating a part of the range of the mathematical formula stored in the mathematical formula storing means, and integrated value of the numerical solution within the range designated by the range designating means. means leaving a small calculation that calculates a subtotal seeking, and equation outside the range specified in the above range specifying means
The solution is displayed in the formula display area and the solution display area.
Each is displayed and designated by the above range designation means
Numerical expressions within the range and their solutions are displayed in the numerical display area.
While displaying the formula, the previous one line in the range in the solution display area
Display means for displaying the subtotal and leaving other lines blank
It is characterized by

Further , the present invention inputs a plurality of mathematical expressions,
Calculate the total by accumulating the solutions of the entered formulas
Then, on the computer displayed in the total display area,
Formula storing means for storing a plurality of applied formulas, and the formula
Specify a range of a part of the formula stored in the storage means
Within the range designated by the range designating means and the range designating means
Subtotal that calculates the integrated value of the solution of a certain formula and calculates it as a subtotal
Number within the range specified by the calculation means and the above range specification means
Formula and solution display area for formulas and their solutions
Are displayed on the screen and specified by the range specification means
For the formulas outside the specified range and their solutions,
While displaying the formula in the
Display in white and display the subtotal in the total display area
And a display means.

The present invention also provides a display on the display means.
Numerical value for moving the cursor
Input means, the range designating means is the cursor
From the display position of, the number of lines input by the numerical input means
It is a means to specify the range up to the position moved in the direction.
And are characterized.

The present invention also provides a display on the display means.
Cursor movement means to move the cursor, and subtotal
And a range designating means for designating calculation,
Is when the subtotal calculation is instructed by the instructing means.
From the position where the cursor was, the cursor moving means
Specifies the range up to the position where the cursor moves in the row direction
And the cursor is used in the small calculation output means.
Calculate the subtotal corresponding to moving downward
It is characterized by

[0011]

[0012]

In the present invention, the mathematical formulas are displayed and each mathematical formula is displayed.
Display the solution of, but display the solution of the formula in the range for which you want the subtotal
The part is left blank and the calculated subtotal is displayed. sand
That is, erase the value of the solution for the subtotal and replace it.
Subtotals are displayed, the total solution is
There is no change even in the case.

According to the present invention, mathematical expressions are displayed and
Display the solution to the formula, but if you want a subtotal, find the subtotal.
Display the solution part of the formula outside the range
Display a subtotal in the area. This allows the solution display area
Is the totalized display of the subtotal.

According to the present invention, the range is designated by the cursor and the numerical value.
Do by typing. That is, the number that indicates the number of rows for which you want the subtotal
Subtotal number of lines starting from the line where the cursor is when you enter a value
Ask for. With this, the cursor position and numerical value at that time
It is possible to specify the range efficiently by inputting.

According to the present invention, the range is designated by the cursor.
U Based on the position where the cursor was first,
Find the subtotal within the range where the cursor moves
It This makes it very easy to understand just by moving the cursor.
It is possible to specify the cone range.

[0016]

[0017]

1 is a block diagram of a computer according to an embodiment of the present invention. The CPU 1 is a processing unit that performs calculation processing and the like, and executes calculation processing according to a program previously written in the ROM 2. The RAM 3 is a working memory and has a counting memory area for counting calculation.

FIG. 2 is a memory map showing an example of the structure of the counting memory area. The totaling memory area is composed of formula storage areas E (1) to (100), solution storage areas S (1) to (100), and a total storage area T. The formula input from the key input device 5 is stored in the formula storage area in order from E (1). The contents of eight of these 100 storage areas can be displayed on the display device 4 described later.
In, the argument of the area storing the contents displayed in the column designated by the cursor is set in the storage area pointer L.

A display device 4 and a key input device 5 are provided on the surface of the computer. The display device 4 is composed of a liquid crystal panel and is connected to the CPU 1 via the display control unit 6. In this embodiment, the display device 4 uses a liquid crystal panel of 36 columns × 8 lines display. Of these, the left 20 digits are used as a mathematical expression display area, and the right 16 digits are used as a solution display area. In the mathematical expression display area, the mathematical expression input from the CPU 1 is displayed left-aligned by the display control unit 6,
In the solution display area, the solution input from the CPU 1 is displayed by the display control unit 6 with right alignment. The eighth line is designated as the total display line, and the formula is not displayed, but the total solution of the formulas input so far is displayed.

The key input device 5 includes a numeric keypad 5a for inputting numerical values, a code key 5b for inputting calculation codes (+,-, x, ÷), a subtotal key 5c for instructing a subtotal calculation mode, and a memory content. All clear key 5d for initialization, insert key 5e for inserting new data into already input data, delete key 5 for deleting already input data
f, a cursor key for moving the cursor left / right and up / down (cursor left move key 5g, cursor right move key 5h, cursor up move key 5i, cursor down move key 5j) and the cursor to the home position (upper left corner of the display device 4). It has a home position key 5k for moving. Of the cursor keys, the cursor down movement key 5j also has the function of an equal key (execution key) for obtaining the solution of the inputted mathematical expression. That is, when the cursor is moved to the next (lower) row after entering the mathematical formula, the computer executes the operation of finding the solution of the row where the cursor is at that time. The input state of each key is detected by the input control unit 7 and the CPU
Input to 1.

FIG. 4 shows a display example of the display device 4. In the same figure (A), after inputting the numerical values of FIG. 3 from the beginning for 7 lines, the cursor is moved up to the 4th line by the cursor up movement key 5i, and the display example when the input edit line pointer L = 4 is set. Shows. Here, the # symbol represents the cursor. In this example, since the numerical expression is the numerical value of the first term, this numerical value is transferred as it is to the solution display area on the right as a solution.
In addition, the total of the seven values that have already been input is displayed in the solution display area on the eighth line.

FIG. 5 is a flowchart showing the key-on handling operation of the computer. When the key is turned on, it is determined whether the subtotal mode or the input mode is currently set (n
1). If the subtotal mode, the operation corresponding to the subtotal mode shown in FIG. If it is not the subtotal mode, it is judged whether it is the normal input mode (n2). N3 in input mode
Proceed to the following input-compatible operation, and if not in the input mode, proceed to the other current mode-compatible operation.

In the input mode, it is judged which key is turned on (n3, n4, n5). If the turned-on key is a numeric keypad or a sign key (n
4) At the same time as the line where the cursor is currently located, that is, the formula input area E (L) pointed to by the storage area pointer L is written (n6), the input contents are displayed in the formula display area of the corresponding line of the display device 4. Display (n7). If the turned-on key is the cursor key, it is determined whether the turned-on cursor key is the cursor down movement key 5j (n8). If the turned-on key is the cursor down movement key 5j, the formula of the line on which the cursor is currently located, that is, the formula storage area E (L) designated by the storage area pointer L is calculated (n9), and the solution is stored in the solution storage area S. While writing to (L), the total is calculated and the total storage area T is updated (n10). These solutions and totals are displayed in the corresponding solution display area (n11). After that, the cursor display is moved in response to turning on of the cursor key (n12). On the other hand, if the turned-on cursor key is other than the cursor down movement key, the cursor is moved in the designated direction (n1
2). If the turned-on key is the subtotal key (ST key), the subtotal mode is set (n13). If any other key is turned on, the corresponding operation is executed.

FIG. 6 is a flowchart showing the subtotal mode operation of the computer. This operation is performed by inputting the number of lines N for calculating the subtotal,
This is an operation of calculating a subtotal for a line. This operation is executed when the subtotal key is turned on and the subtotal mode is set. When the user turns on the numeric keypad 5a, this is taken in as the number of rows (the number of mathematical expressions) N for calculating the subtotal (n2
1). After that, when the cursor down movement key 5j for instructing the end of input is turned on (n22), the number N of input lines is compared with the storage area pointer L (n23), and N =
If 0 or N> L, the input ends as an error (n24), and if there is no error, the subtotal is calculated (n2).
5). For example, when N = 3 is input in the state of FIG. 4 (A), the subtotal is

[0025]

[Equation 1]

[0026] By inputting a negative value for N, it is also possible to calculate the subtotal downward from the storage area pointer L. The subtotal display operation is executed (n26), the subtotal mode is released (n27), and the operation ends.

FIG. 7 shows a second subtotal mode operation of the computer.
3 is a flowchart showing an example of the above. This operation is an operation of automatically calculating a subtotal in the range from the storage area pointer L when the subtotal key is turned on to the line where the current cursor is by moving the cursor using the cursor key. When the subtotal key 5c is turned on to proceed to this operation, first, the current content of the storage area pointer L is substituted into the variable register M (n31). The content of L is fixed until the subtotal mode is released. Next, when the cursor up movement key 5i and the cursor down movement key 5j are operated (n3
2) The cursor is moved in response to this key-on (n33), and the following small calculation operation is executed.

When the cursor up movement key 5i is turned on (n34), when M is larger than 1 (n35) M
1 is subtracted from (n36). If M is 1 or less, do nothing. On the other hand, if the cursor down movement key 5j is turned on (n34), if M is smaller than 100 (n3).
7), 1 is added to M (n38). If M is 100 or more, do nothing. The subtotal of the rows in the range of L and M is calculated (n39), and the subtotal display operation is executed (n40). After this, the process returns to n32 and waits for the next up / down cursor moving key to be pressed. If the subtotal key 5c is turned on again in this loop, the subtotal mode is released and the operation is exited.

Note that in n37, the formula storage area E (1) ...
The last area E of E (100) where the formula is written
The update of M may be limited to the range up to (MAX).
However, if the area where the mathematical formula is not written is cleared to 0, the calculated subtotal values are the same.

The subtotal obtained by the above operation can be obtained, for example, by pressing the cursor up movement key 5i twice in FIG.

[0031]

[Equation 2]

It becomes

FIG. 8 is a flowchart showing the subtotal display operation of the computer. This operation clears the contents of the solution display area subtotal calculation range, and displays the subtotal on one line of the cleared solution displaying area.

First, the numerical value necessary for calculating the subtotal is set (n41). As for the numerical value, the first value of the display device 4
The storage area number Q displayed on the line (i = 1), the storage area pointer L, the small calculation range register M, the maximum number MAX of the storage area for which the mathematical expression has been input, and the like. Next, the row number pointer i indicating the number of rows of the display device 4 is cleared (n4
2) After that, the following loop operation is executed. First,
1 is added to i (n43). As a result, if i becomes larger than 7 (n44), all lines on the display device 4 have been displayed, and the process is terminated. If Q + i-1 <M, it is out of the small calculation range, so the mathematical expression and its solution are displayed (n4).
5, n46). If Q + i-1 = M, since this is the line where the cursor is currently located, the formula and the cursor are displayed in the formula display area and the subtotal is displayed in the value display area (n47, n48). If Q + i−1 ≦ L, it is within the small calculation range, so only the mathematical formula is displayed in this row and the solution display area is cleared (n49, n50). Also, Q + i
If -1≤MAX, it is outside the small calculation range and the mathematical expression is within the input range, so the mathematical expression and its solution are displayed in that row (n51, n52). If Q + i-1> MAX, then Since nothing has been entered in the storage area, the formula display area and the solution display area are left blank (n5
3). Note that this operation is repeatedly executed, and the display device 4
When the screen is scrolled, Q is set again and the process is re-executed. Then, when the subtotal mode is released, this operation is exited.

In the display example of FIG. 4A, Q = 1, MAX
= 7, the display as shown in FIG. 4B is performed when the above operation is performed with M = 2 and L = 4. As described above, in this display method, the solution in the range for calculating the subtotal is erased and the subtotal is displayed instead, so that the total value of the solution display area does not change.

FIG. 9 is a flow chart showing another embodiment of the subtotal display operation of the computer. In this operation , the solution display area is displayed only in the small calculation range, and the subtotal is displayed in the bottom line of the display device.

First, the numerical value necessary for calculating the subtotal is set (n61). As for the numerical value, the first value of the display device 4
The storage area number Q displayed on the line (i = 1), the storage area pointer L, the small calculation range register M, the maximum number MAX of the storage area for which the mathematical expression has been input, and the like. Next, the row number pointer i indicating the number of rows of the display device 4 is cleared (n6
2) After that, the following loop operation is executed. First,
1 is added to i (n63). As a result, when i becomes larger than 7 (n64), that is, when i = 8, the display device 4 is at the bottom line, and therefore the subtotal is displayed here instead of the total (n65), and the process ends.

If Q + i-1 <M, it is out of the small calculation range, so the mathematical expression is displayed in the mathematical expression display area and the solution display area is cleared (n66, n67). M≤Q + i-1
If ≤L, both the mathematical expression and the solution are displayed in this row because it is within the small calculation range (n68, n69). Also, Q +
If i−1 ≦ MAX, the mathematical expression is outside the small calculation range, and therefore only the mathematical expression is displayed on that line (n70, n71). If Q + i-1> MAX, nothing is entered in this storage area, so the formula display area and the solution display area are left blank (n72).
Note that this operation is repeatedly executed, and when the screen of the display device 4 scrolls, Q is set again and the operation is executed again. Then, when the subtotal mode is released, this operation is exited.

In the display example of FIG. 4A, Q = 1, MAX
= 7, the display shown in FIG. 4C is performed when the above operation is executed with M = 2 and L = 4. In this display method, only the solutions in the range for which the subtotal is calculated are displayed in the solution storage area, and the subtotal is displayed instead of the total, so that the integrated content of only the subtotal can be displayed in an easy-to-understand manner.

[0040]

According to the above manner the present invention, according to the present invention, the subtotal
Deleted elemental solutions and displayed subtotals
Allows subtotals to be displayed without using a special display area
You can also change the total value of the displayed solution.
Does not turn into Also, display only the solutions that are the elements of the subtotal,
By displaying the subtotal in the grand total display column, the display means is
You can switch to the subtotal display only,
It can be displayed in an easy-to-understand manner. Further, since the range is designated by inputting the cursor position and the number of mathematical expressions, the range can be designated at high speed. Also,
By specifying the range by moving the cursor, the range can be specified easily.

[0041]

[0042]

[0043]

[0044]

[Brief description of drawings]

FIG. 1 is a block diagram of a computer that is an embodiment of the present invention.

FIG. 2 is a diagram showing an example of a mathematical formula processed by the computer.

FIG. 3 is a diagram showing a part of a memory configuration of the computer.

FIG. 4 is a diagram showing a display example of a display device of the computer.

FIG. 5 is a flowchart showing the operation of the computer.

FIG. 6 is a flowchart showing the operation of the computer.

FIG. 7 is a flowchart showing the operation of the computer.

FIG. 8 is a flowchart showing the operation of the computer.

FIG. 9 is a flowchart showing the operation of the computer.

[Explanation of symbols]

5c ... Subtotal keys E (1) to E (100) ... Formula storage area, S (1) to S (1
00) ... solution storage area, L ... storage area pointer

Continuation of the front page (56) Reference JP-A-6-139261 (JP, A) JP-A-5-173980 (JP, A) JP-A-7-64917 (JP, A) Actual Kaihei 1-116852 (JP , U) Yukei Abe, "MS-Excel Operation Guidebook", Natsume Co., 1990, p. 138-139 (58) Fields surveyed (Int.Cl. ⁷ , DB name) G06F 15/02 G06F 19/00

Claims (4)

(57) [Claims] 1. A computer for inputting a plurality of mathematical expressions, calculating a total by accumulating solutions of the input mathematical expressions, and displaying the total in a total display area, a mathematical expression storing means for storing the plurality of input mathematical expressions. When,
A range specifying means for specifying a portion of the range of formulas that are stored in said number-equation storage means, range designated by the range designating means
Equations and solutions the solution of means out small calculation that calculates a subtotal seeking integrated value outside the range specified in the above range specifying means formula in囲内
Are displayed in the formula display area and the solution display area, respectively.
Within the range specified by the above range specification means
The formulas and their solutions are displayed in the formula display area.
On the other hand, the subtotal is displayed in one line of the range in the solution display area.
And a display means for displaying other lines and blanking other lines.
A calculator characterized by . 2. Entering a plurality of mathematical expressions,
The total is calculated by accumulating the solutions, and the total display area is displayed.
In the computer displayed in a, the formula storage means for storing the plurality of input formulas,
The range of a part of the formula stored in the formula storage means is designated.
Range specifying means and the range specified by the range specifying means.
Calculate the integrated value of the solution of the formula in the box and calculate it as a subtotal
Small calculation means, and the formula and its solution within the range specified by the range specifying means.
Are displayed in the formula display area and the solution display area, respectively.
In addition to indicating, outside the range specified by the above range specification means
The formulas and their solutions are displayed in the formula display area.
On the other hand, leave the range in the solution display area blank, and
Display means for displaying the subtotal in the total display area,
A computer characterized by comprising . 3. A cursor displayed on the display means
Equipped with cursor moving means for moving and numerical input means
E, the range designating means is a number from the display position of the cursor.
Position moved in the row direction by the number of rows input by the value input means
The computer according to claim 1 or 2, which is a means for designating a range up to . 4. A cursor displayed on the display means
Cursor moving means for moving the fingers to direct the subtotal calculation
And a indicates means, the range specifying means, calculates the subtotal by said instructing means
From the position where the cursor was when the
The position where the cursor moved in the row direction by the sol movement means
Is a means for designating a range up to, and the small calculation output means moves the cursor downward.
The computer according to claim 1 or 2 , wherein the subtotal is calculated correspondingly .