JP2863077B2 - Electronic computing device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electronic computer, and more particularly to an electronic computer suitable for application to a desktop electronic computer.

[0002]

2. Description of the Related Art A desk-top electronic computer is widely used as a dedicated device or as a function of a general-purpose computer.

[0003] In general, such a desk-top type electronic computing device is capable of storing the immediately preceding calculation result, arithmetic operation, and numerical value being input.

[0004] When performing continuous calculations using a table-top electronic computer, it is often the case that a mistake is made in the input contents of a previous calculation operation during the calculation operation or after obtaining the calculation result. For example, if the addition operation and the multiplication operation are mistaken, the calculation result may overflow, or the result may be significantly different from the expected value. May be.

[0005]

However, in the conventional desk-top type electronic computer, the calculation operation is not held back to the past. Therefore, if a mistake is noticed, all of the calculation is performed again from the first calculation. You need to enter it again. For this reason, errors tend to occur as the number of calculation operations increases, so that when performing calculations with many calculation operations, it takes a long time to obtain accurate calculation results, and there is a problem that the efficiency is extremely low. .

Further, even if the operator notices an error in the immediately preceding arithmetic operation during the calculation operation, there is no means for canceling the error. Therefore, it is necessary to start over again from the first calculation operation. There was a problem that was bad.

In some cases, a series of calculation operations is performed once, and the same calculation operation is repeated again to check whether the calculation operation is correct. However, since means for comparing a plurality of calculation operations is not provided, If the calculation results are different between the first and second times, it is necessary to perform the calculation again to know which calculation result is correct. In such a case, there is a problem that the efficiency is low.

In this case, as disclosed in Japanese Patent Application Laid-Open No. 62-226262, when a plurality of display columns for displaying the numbers and calculation results are provided, and two or more calculation results can be compared, If the first and second calculation results are the same, it can be determined that both calculation results are correct. However, if the calculation results are different, it is necessary to perform the calculation operation again to determine which is correct.

SUMMARY OF THE INVENTION An object of the present invention is to provide an electronic computer which can efficiently correct a calculation operation when it is erroneous, and can efficiently find a mistake, and can obtain a correct calculation result efficiently with a small number of calculation operations. It is in.

[0010]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention basically provides a plurality of sets of calculation operation storage means for storing input calculation operation contents in the order of operation, and an arbitrary calculation operation step. Operation means for instructing, a processing means for searching the calculation operation storage means for the calculation operation content of the calculation operation stage instructed by the operation means, a plurality of sets of display means for displaying the searched calculation operation contents, Changing means for changing the calculation operation content of any operation stage stored in the calculation operation storage means according to the change operation; and canceling the calculation operation content of any operation stage stored in the calculation operation storage means according to the cancellation operation Means, and the calculation operation storage means
Assigned to the calculation operation contents of any operation stage stored in the column.
And inserting means for inserting the calculated operation contents at will, and calculating means for performing calculations corresponding to the stored computed operation content to the computing operation storage means in accordance with calculation execution operation, follow the comparison execution operation
Calculation operation contents stored in each calculation operation storage means
Are compared, and different calculation operations are displayed on each display.
Comparison means for causing

Further, among the plural sets of calculation operation storage means,
The set used for calculation operation and the contents of calculation operation are being changed
Means is provided for performing identification display of a certain state.

[0012] Further, there is provided means for constantly displaying the number of the input mathematical formulas on the display means .

[0013]

According to the above means, the input calculation operation contents are stored in the operation order, and the contents are displayed by the request operation. Further, a part of the past calculation operation is changed by the request operation, and the calculation is performed again from the beginning of the calculation operation.
As a result, even if a calculation operation is mistaken during the calculation, a correct calculation result can be obtained efficiently without re-inputting all the calculation operations from the beginning.

If the operator notices an error in the immediately preceding calculation operation, the situation can be restored to the state immediately before the erroneous operation by performing a cancel operation.

Further, by providing a plurality of sets of calculation operation storage means and display means, calculation is performed twice for verification, and if the result is different, the contents of the two calculation operations are compared by the request operation, Different operation contents are shown. Thereby, an error in the operation content can be found efficiently.

Further, since the number of input mathematical expressions is always displayed, it is possible to always judge whether the number of input mathematical expressions is correct, and it is possible to notice input omissions and extra input operations.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to the illustrated embodiments.

FIG. 1 is a plan view of an operation surface of a desk-top electronic computer according to an embodiment of the present invention, FIG. 2 is a diagram showing a change in a display state of a display column in the embodiment, and FIG. It is a function block diagram of the example desk-top type electronic computing device.

The desktop electronic computer of this embodiment has two display columns 101a and 101b. When performing calculations, first press the display column selection keys 102a and 102b to use either display column. 2 is displayed in the designated display columns 101a and 101b as shown in FIG.

When the calculation operation is performed, the display fields 101a and 101 are displayed.
In b, the input numerical value and the calculation result are displayed as in the conventional calculator. Further, the contents of the calculation operation are stored.

Further, two formula count display fields 110
a and 110b are provided, where the number of input mathematical expressions is always displayed. For example, when inputting 4 + 5 + 6 =, "1" is displayed in the formula count display field 110a (or 110b) when "4+" is input,
When "5+" is input, the formula count display field 110a
(Or 110b) is "2", and when "6 =" is input, the formula count display field 110a (or 110b)
Displays "3", so that it can be understood that three mathematical expressions have been finally input.

In addition, below the display columns 101a and 101b, numerical keys and operator keys are provided, and a calculation execution key 107, an operation comparison key 108, and an operation cancel key 109 are provided. Further, a display field selection key 10
The operation return key 103 and the operation feed key 10 are on the right of 2
4. An operation insertion key 105 and an operation deletion key 106 are provided.

These key groups correspond to the operation input device 34 shown in FIG.
0, the display columns 101a and 110a constitute a part of the display unit 310 of FIG. 3, and the display columns 101b and 110b constitute a part of the display unit 320 of FIG.

As shown in FIG. 3, the display section 310 comprises a formula counting display device 311 and a display device 312. The display device 312 has the display column 101a of FIG. 1, and the formula counting device 311 has the display column 110a. Exists. Similarly, as shown in FIG. 3, the display unit 320 includes a formula count display device 321 and a display device 323.
23 has a display column 101b of FIG. 1 and the mathematical expression counting device 321 has a display column 110b.

The display units 310 and 320 are connected to a display control unit 331 of the central processing unit 330.

The central processing unit 330 includes a display control unit 33
In addition to 1, it comprises a calculating device 332, a comparing device 333, a changing device 334, a canceling device 335, and an input control device 336, and the operation input device 340 is connected to the input control device 336.

The input control device 336 is connected to calculation operation storage devices 351 and 352 for storing calculation operations using the two display fields 101a and 101b. The calculation operation storage devices 351 and 352 are stored in the main storage device 35.
0 is provided.

In this configuration, the type of the input operation performed by the operation input device 340 is determined by the input control device 336, and the calculation device 332 and the comparison device 33
3, change device 334, cancel device 335, main storage device 35
Output to 0.

The results processed by the calculating device 332, the comparing device 333, the changing device 334, and the canceling device 335 are processed by the display control device 331 to determine the display columns, and
Or displayed at 320.

The content of the input operation performed by the operation input device 340 for performing the calculation, that is, which of the numerical keys and the operator keys is operated, is calculated by the input control device 336 by the calculation device 332 and the main storage device 350. Is transmitted to
In this case, the output to the main storage device 350 is output to the calculation operation storage device 351 when the display target is the display unit 310, and is output to the calculation storage device 35 when the display target is the display unit 320.
2 is output.

Here, a changing method in the case where the calculation operation is mistaken will be described with a specific example.

When the calculation operation of 4 + 5 + 6 = is erroneously input as 4 + 2 + 6 =, the operation is performed in a state where “15” should be correctly displayed in the display column 101a and “12” is displayed. Press the return key 103 once. Then, the display box 101a displays “+
6 "is displayed, and the changing display 202 (see FIG. 2) indicating that the operation is being changed is lit. When the operation return key 103 is further pressed, the display changes to “+2” in the display column 101 a by going back the operation.

Here, the operation feed key 104 performs the opposite operation of the operation return key 103. For example, when the operation feed key 104 is pressed while "+2" is displayed in the display column 101a, "+6" and subsequent operations are sequentially displayed in the display column 101a.

Using the operation return key 103 and the operation feed key 104, a state is displayed in which the wrong operation "+2" is found and displayed. Since the value is correctly “5”, when the numerical key of “5” is pressed, the display changes to “+5”, and the content stored in the calculation operation storage device 351 is also replaced.

To perform the calculation again in this state, the user presses the calculation execution key 107. As a result, the stored calculation operation is given to the calculation device 332, and the correct result “15” is displayed in the display column 101a.

At this time, since the change state of the operation has been released, the change-in-progress display 202 is turned off.

By the way, there is a possibility that a mistake is made in the calculation operation such as omission of input or extra input. When the input is omitted, the place where the input is to be inserted is displayed, and the operation insertion key 105 is pressed once to perform the operation to be inserted. During the insertion, the during-insertion display 203 in FIG. 2 is lit to indicate that the insertion is being performed. This insertion state is released by pressing the calculation execution key 107, the operation deletion key 106, the operation insertion key 105, the operation return key 103, the operation forward key 104, etc., and the display 203 during insertion is turned off.

When an operation is to be deleted, the operation to be deleted is displayed and the operation delete key 106 is pressed. Each time the button is pressed once, the displayed operation is deleted, and the operation next to the deleted operation is displayed in the display column 101a. Therefore, when deleting a plurality of continuous operations, the first operation of the operation to be deleted is displayed, and the operation delete key 106 may be pressed a required number of times.

In any case, after correcting the calculation operation,
When the calculation execution key 107 is pressed once, the stored calculation operation is executed from the beginning to the end, and the result at the time of performing the last calculation operation is displayed in the display column 101a.

If it is desired to continue the calculation in this state, the normal calculation operation may be performed as it is, and the calculation operation is additionally stored.

Next, the operation cancellation will be described using a specific example.

When the calculation operation of 4 + 5 + 6 = is erroneously input as 4 + 5 × 6 =, in the state where “15” should be correctly displayed in the display column 101a and “54” is displayed, Press the operation cancel key 109 once. Then, the previous calculation operation “x6” is canceled, and the display returns to the state immediately after performing “4 + 5”. Therefore, a correct calculation result can be obtained by inputting "+ 6 =" which is a correct calculation operation. The cancellation can be traced back. That is, if you press once, "x6"
Is canceled, and if it is pressed once more, "+5" which is the previous calculation operation is canceled.

Next, the operation comparison will be described using a specific example.

The calculation operation of 4 + 5 + 6 = is performed in the display column 101a, and the display column 101
When the check operation is performed in b, if 4 + 2 + 6 = is input by mistake, "15" is displayed in the display column 101a.
However, "12" is displayed in the display column 101b, and it can be seen that the two calculation operations do not match. Here, when the operation comparison key 108 is pressed once, the two operations are compared from the beginning, and the operations that do not match are displayed in the respective display columns 101a and 101a.
It is displayed on 101b. In this case, since "2" and "5" do not match, "+5" is displayed in the display column 101a and "+2" is displayed in the display column 101b. In addition, “2” indicating that they did not match in the second mathematical expression is displayed in the mathematical expression count display columns 110a and 110b. This allows
It can be seen that “+2”, which is the second mathematical expression input of the verification operation, was incorrect.

Next, a processing method for outputting to the calculation operation storage devices 351 and 352 will be described with reference to the flowchart of FIG. As a calculation example, a change in the content of the calculation storage device 351 when the calculation operation of 4 + 5 + 6 = is performed will be described.

First, in step 401, "4+" which is the first calculation formula is input. In step 402, the calculation count area 411 is referred to and the content is “0”.
Output to area. In step 403, “1” is added to the calculation count area 411, and the calculation count area 411 is added.
To “1”.

In step 404, the contents of the calculation count area 411 are output to the display control device 331. As a result, “1”, which is the current number of mathematical expressions, is displayed on the mathematical expression count display device 311.

Next, at step 401, the second calculation formula "5+" is input. In step 402,
Since the content is “1” with reference to the calculation count area 411, the input calculation formula is output to the second area of the calculation formula storage area 412. In step 403, “1” is added to the calculation count area 411, and the calculation count area 4
11 is set to “2”. In step 404, the contents of the calculation count area 411 are output to the display control device 331. As a result, the current mathematical expression number “2” is displayed on the mathematical expression count display device 311.

The same processing is performed when "6+" is input.

In the cancel operation, the operation input from the operation input device 340 is changed by the input control device 336 to the cancel device 33.
5 is transmitted.

An example of the processing method in the cancellation device 335 will be described with reference to the flowchart of FIG. As a calculation example, a case will be described in which after performing a calculation operation of 4 + 5 × 6 =, a cancellation operation is performed once to cancel “× 6”.

First, in step 501, the operation of the operation cancel key 109 is input. In step 502, “1” is subtracted from the calculation count area 411,
At 3, the contents of the corresponding calculation storage area 412 are initialized. As a result, the calculation operation “× 6 =” is deleted from the calculation storage area 412. In step 504, the contents of the calculation count area 411 are displayed in the formula count display device 3.
11 shows the final state of the calculation operation storage device 351 in the display column 1
01a. As a result, the display column 101a displays “×
Return to the state before operating “6 =”.

Next, an example of a processing method in the changing device 334 will be described with reference to a flowchart of FIG. After performing a calculation operation of 4 + 2 + 6 = as a calculation example, “+
The case where "2" is changed to "+5" will be described.

First, at step 601, the operation of the operation return key 103 is input. In step 602, if the key input immediately before is “=” or a key other than the calculation execution key 107, “1” is subtracted from the calculation count area 411,
In step 603, the contents of the corresponding calculation storage area 412 are displayed in the display column 101a. In step 604, the contents of the calculation count area 412 are displayed on the calculation count display device 311. A return operation is performed again, and the state of the calculation count display device 311 is changed to “2”, and the display column 101a is displayed.
Is set to “+2”. When "+5" is input in this state, the contents of the calculation storage area 412 are replaced with "+5" by the operation of the input control device 336. By operating the calculation execution key 107, the calculation operation stored in the calculation operation storage device 351 is updated.
The calculation result after the change is displayed in the display column 101a.

Next, an example of a processing method in the comparison device 333 will be described with reference to a flowchart of FIG. As a calculation example, a calculation operation of 4 + 5 + 6 = and 4 + 2 + 6 =
The case of comparing the calculation operations described above will be described.

First, the contents of each calculation operation are stored in calculation count areas 411a and 411b and calculation storage areas 412a and 412b. Also, calculation count display devices 110a and 110b, display fields 101a and
Let it be the state displayed on 101b.

First, in step 701, a comparison operation using the operation comparison key 108 is input. In step 702, the operation to be compared is the first operation. In step 703, the comparison formulas to be compared are compared. If they match, in step 704 the comparison formula is set to 1
Is advanced. In this specific example, the second calculation formula does not match, so the comparison of the second calculation formula does not match,
Proceed to step 705. In step 705, the contents of the calculation count areas 411a and 411b in the mismatched state are displayed on the calculation count display devices 110a and 110b, and the contents of the calculation storage areas 412a and 412b are displayed in the display column 101.
a and 101b.

This indicates that the operation in the second calculation formula is incorrect.

Next, an example of a processing method for inserting a new calculation operation in the middle of a calculation operation already input in the change device 334 will be described with reference to the flowchart of FIG. After performing a calculation operation of 4 + 6 = as a calculation example,
A case where “+5” is inserted before “+6” will be described.

First, the operation return key 103 is operated once. Then, if the key input immediately before is “=” or a key other than the calculation execution key 107, “1” is subtracted from the calculation count area 411, and the display content of the display column 110a is returned by one. Note that in this example, “2” is maintained. Next, the operation insertion key 105 is operated. Then, the operation of the operation insertion key 105 is input in step 801. In step 802, the calculation formulas after the storage area indicated by the calculation count area 411 are shifted, and in the next step 803, the storage area indicated by the calculation count area 411 is initialized.

As a result, the area where "+6" is stored becomes "0", and "+6" is moved to the next area. Next, in step 804, the display column 101a
To display the in-insertion display 203. In this state, "+
When "5" is input and the calculation execution key 107 is operated, the content of the calculation storage area 412 becomes "4 + 5 + 6 =", and the calculation result is displayed in the display column 101a.

Although only four calculation count areas 411 and four calculation storage areas 412 are shown in the above description, this is for the sake of simplicity.
Needless to say, more areas are prepared. Accordingly, it is possible to retroactively verify a calculation including a large number of calculation formulas that can be actually realized.

The calculation operation storage device and the display unit are
Although a set is provided, two or more sets may be provided.

[0064]

As described above, in the present invention,
Calculation operation storage means for storing input calculation operation contents in the order of operation, operation means for instructing an arbitrary calculation operation stage,
Processing means for retrieving the contents of the calculation operation at the calculation operation stage instructed by the operation means from the calculation operation storage means; display means for displaying the contents of the searched calculation operation; and arbitrary information stored in the calculation operation storage means Changing means for changing the content of the calculation operation at the operation stage according to the change operation, cancellation means for canceling the content of the calculation operation at any operation stage stored in the calculation operation storage means according to the cancellation operation, and the calculation operation according to the calculation execution operation Since there is provided a calculation means for performing a calculation corresponding to the content of the calculation operation stored in the storage means, it is possible to efficiently correct a wrong calculation operation, and to obtain a correct calculation result efficiently with a small number of calculation operations.

Furthermore, a plurality of sets of the calculation operation storage means and display means are provided, and comparison means for comparing the calculation operation contents stored in each calculation operation storage means are provided, and different calculation operation contents are displayed on each display means. Is displayed, so that if a calculation operation is erroneous, the error can be found efficiently.

Further, since means for constantly displaying the number of mathematical expressions input to the display means is provided, it is always possible to judge whether or not the number of mathematical expressions input is correct. be able to.

Further, since a plurality of sets of calculation operation storage means are used to identify the set used for the calculation operation and the state that the content of the calculation operation is being changed, the current operation state is displayed. Can be accurately recognized, and operation errors can be prevented.

[Brief description of the drawings]

FIG. 1 is a plan view showing one embodiment of an operation surface of an electronic computing device according to the present invention.

FIG. 2 is an explanatory diagram showing a display example in the embodiment.

FIG. 3 is a functional configuration diagram in the embodiment.

FIG. 4 is a flowchart illustrating an example of an output processing method to a calculation operation storage device.

FIG. 5 is a flowchart illustrating an example of a calculation operation cancellation processing method.

FIG. 6 is a flowchart illustrating an example of a calculation operation change processing method.

FIG. 7 is a flowchart illustrating an example of a calculation operation comparison processing method.

FIG. 8 is a flowchart illustrating an example of a calculation operation insertion processing method.

[Explanation of symbols]

101a, 101b display field, 102a, 102b display field selection key, 103 operation return key, 104 operation feed key, 105 operation insertion key, 106 operation deletion key, 107 calculation execution key, 108 operation comparison Key, 1
09: operation cancel key, 110a, 110b: formula count display field, 201: selected display, 202: changing display,
203: display during insertion, 310, 320: display unit, 330
... Central processing unit, 340 ... Operation input device, 350 ... Main storage device, 411, 411a, 411b ... Calculation count area, 412, 412a, 412b ... Calculation storage area.

Claims (3)

(57) [Claims] 1. A plurality of sets of calculation operation storage means for storing input calculation operation contents in the order of operation, an operation means for instructing an arbitrary calculation operation stage, and a calculation operation of a calculation operation stage instructed by the operation means Processing means for retrieving the contents from the calculation operation storage means; a plurality of sets of display means for displaying the searched calculation operation contents; and an operation for changing the calculation operation contents at any operation stage stored in the calculation operation storage means Changing means for changing the contents of the calculation operation at any operation stage stored in the calculation operation storage means according to the cancellation operation; and changing means stored in the calculation operation storage means.
Calculation operation at any operation stage
Insertion means for inserting the contents of the operation, calculation means for performing a calculation corresponding to the content of the calculation operation stored in the calculation operation storage means in accordance with the calculation execution operation, and each calculation in accordance with the comparison execution operation
Compare the calculation operation contents stored in the operation storage means,
Comparison means for displaying different calculation operation contents on each display means
Electronic computing device, characterized in that it comprises a stage. 2. The method according to claim 1, wherein said plurality of sets of calculation operation storage means are used for calculation operation.
The set used in the work and the content of the calculation operation are being changed
2. The electronic computing device according to claim 1, further comprising means for performing identification display of the state . 3. The number of formulas inputted is always displayed on said display means.
2. A time display means.
3. The electronic computing device according to any one of claims 2 to 6 .