JPH02213975A - Electronic computer - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to an electronic computer having arithmetic functions such as a unit conversion function (area calculation, distance calculation, etc.) or compound interest calculation.

[Conventional technology] Traditionally, devices have been equipped with various displays, keyboards, etc.
An electronic desktop calculator that can perform various calculations (
There are many calculators on the market.

These electronic desktop calculators are required to have low power consumption, with an emphasis on cost reduction and portability. (liquid crystal display), etc., and is configured to reduce power consumption. In such a calculator, there is generally a one-to-one correspondence between variables (numeric input data) and keys (corresponding function keys) for specifying operations for the variables. After inputting all the variables, the instructions for finding the solution are as follows:
The configuration is such that the result is displayed on the display unit by inputting using a corresponding function key or the like.

In addition, if you want to check the previously set numerical data (variables) based on the results obtained in this way, you can input them again on the display by operating the call key, etc., and then operating the corresponding key. The numerical data can be displayed.

[Problems to be Solved by the Invention] However, since these calculators generally display only one line, it is difficult to correspond between input numerical data and obtained result data. In order to improve this, some devices are equipped with a display section that can display in multiple stages, or are equipped with a printer to print out all data for easy confirmation.

However, even though all numerical input data and their results are displayed at the same time on devices equipped with a display that can be displayed in multiple stages, if you want to change these data, you must first set the correction mode. You need to move the cursor etc. to the part you want to correct and make changes. Therefore, there is a problem that the operation becomes complicated.

In addition, with calculators equipped with a printer, you can easily understand the sequence of calculations by printing them out, but in order to check the data, you need to print each one, and it is necessary to print out each calculation during or after inputting the data. To change the input data, you need to check the data location and move the cursor to that location to make the change, which makes the operation complicated, similar to when using a calculator with a multi-level display. There is a problem.

Furthermore, with a calculator that has a function that allows you to convert units, if you want to convert from one unit (for example, yards) to another (for example, meters), enter 100 yards, and then instruct the conversion to meters. When done manually, "91.44 m" is displayed as the conversion result.Subsequently, to enter a conversion instruction such as converting "Loom" to "yard", enter a new "100 m".
It is necessary to re-enter the conversion instructions for ``Yard'' and ``Yard''.

In this way, even if the numbers you want to convert are the same, you will need to re-enter the numerical data each time the type of conversion is different, and after the conversion is complete, only the final result of the conversion will be displayed. There was a problem that it became impossible to know what the unit was.

The present invention has been made in view of the above-mentioned conventional example, and it is possible to input numerical data directly into the corresponding area on the display screen, and also to display a unit input area on the screen and give conversion instructions. The purpose of the present invention is to provide an electronic computer that can easily instruct, change, or correct input data and unit conversion calculations.

[Means for Solving the Problems] In order to achieve the above object, the electronic computer of the present invention has the following configuration. That is, it is an electronic computer that inputs numerical data and various unit conversion instructions and executes calculations corresponding to the input unit conversion, and displays the input numerical data and unit conversion instruction area on the same display screen. a display means, an input means provided on the display screen of the display means and capable of handwriting input of the numerical data and input of items specifying the unit conversion instruction area; A recognition means for recognizing and inputting a unit, a designated unit display means for displaying a unit specified by the input means in a specific area of the display unit, and a correspondence between the recognized numerical data and the unit displayed in the specific area. and control means for controlling the unit conversion calculation to be executed in response to a calculation start instruction inputted from the input means.

[Function] In the above configuration, the input means is provided on the display screen of the display means that displays the input numerical data and the unit conversion instruction area on the same display screen, and allows handwritten input of numerical data and unit conversion. It is possible to input items to specify the designated area. The numerical data inputted by this input means is inputted by character recognition, and the unit specified by this input means is displayed in a specific area of the display means. In this way, the recognized numerical data and the unit displayed in the specific area are associated with each other, and the unit conversion calculation is performed in response to a calculation start instruction inputted from the input means.

[Embodiments] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[Description of Unit Conversion Calculator (FIGS. 1 to 5)] FIG. 1 is a block diagram showing a schematic configuration of a unit conversion computer according to an embodiment.

In the figure, 101 indicates a control unit of the unit conversion calculator. This control unit 101 is used as a work area for a CPtJll such as a microprocessor, a ROMI2 that stores CPU control programs and various data shown in the flowchart of FIG. 6, and a CPU II. RA to temporarily save
It is equipped with M13 etc.

Reference numeral 102 denotes an input/output unit, which includes a liquid crystal display (LCD) 22, a digitizer 23, and the like. 21 is an LCD driver which inputs dot pattern data from the CPU II and drives the liquid crystal display section 22 to display the pattern data. 23 is a digitizer, and an analog signal corresponding to the designated position is input to the A/D converter 24, so that the designated position can be confirmed.

As a result, when a certain position of the digitizer 23 is pressed, the analog position signal is converted into a digital signal by the A/D converter 24 and input to the CPU 1l. This allows the CPU II to detect the pressed position of the digitizer 23. This digital position signal is R
It is stored in AM13. If this position corresponds to either IDI or ID2 in FIG. 2, which will be described later, the CPU II lights up the dot matrix dot on the LCD 22 corresponding to the pressed position.

As a result, the points on the digitizer 23 and the LCD display section 2
2, and the digitizer 23
The characters written above (alphabets, numbers, hiragana, etc.) can be displayed on the LCD 22 in real time.

After that, character recognition is performed based on the data input by hand from the digitizer 23 into the areas corresponding to the data areas indicated by IDI and ID2 in FIG.
2. Display numbers, letters, etc. that have been handwritten in that position. Further, if the position specified on the digitizer 23 is the item designation area (201 to 209, 211, 212) in FIG. 2, the function of the item corresponding to that position will be selected.

Hereinafter, the operation of the apparatus of this embodiment will be explained in detail with reference to FIGS. 2 to 5.

FIG. 2 is a diagram showing an example of the display screen on the LCD 22 of the unit conversion calculator of the embodiment. A transparent digitizer 23 is provided on this display screen, and items can be specified and characters can be input from this screen. Can be done.

FIG. 2 is a diagram showing an example of a display screen when converting area.

In the figure, 201 to 207 are unit selection key areas for instructing unit conversion functions. 211.212 are ID1. , is an area for specifying the unit corresponding to the numerical value inputted to ID2, and the unit selected by 201 to 207 can be specified in this area. Further, IDI and ID2 are areas in which numerical values can be input, and by inputting numbers, characters, etc. by hand using the digitizer 23 into these areas, numerical values, character data, etc. can be input. Furthermore, 208 and 209 are key manual areas for instructing the direction of conversion of units.

FIG. 3 is a diagram showing an example of unit conversion between "tsubo" and "square meter".

To explain the operation on the digitizer 23 at this time, first, specify the unit area 201 to specify "tsubo°°." Then, by specifying the area 211, "tsubo" is specified within the area as shown in the figure. 211.Similarly, by specifying the unit area 204 and specifying "square meter", and then specifying the area 212, "square meter" is displayed in the area 212.After this, the numerical value is set in the IDI. Calculation start instruction input area 209 where data “100” is handwritten and an instruction is given to convert “tsubo” to “square meter”.
By instructing ID2, the calculation result (330
, 5785124) can be displayed.

Note that the data may be input to the IDI before the unit is specified as long as it is before the calculation start instruction input area 209 (or 208) is specified.

Furthermore, Fig. 4 is a diagram showing an example in which the unit of conversion has been changed from the state in Fig. 3, and this example shows an example in which the conversion is executed from ``tsubo゛° to cho''. Here, the area 211 and MDI data ("tsubo"100") remain as they are, but "square meter" is changed to "town".

To explain this operation, first, the unit area 203 is specified and "town" is specified, and then the area 212 is specified, so that "town" is displayed in that area 212. Then, by instructing the calculation start instruction area 209,
In this way, "100 tsubo" is converted to "town", and the calculation result "0.033333333 town" is displayed, allowing you to convert the unit. You can check it.

Furthermore, FIG. 5 is a diagram showing a case in which "machi" is subsequently converted to "han".

Here, “0.033333333 obtained in Fig. 4
"Town" changes to "Anti-Pa", first the unit designated area 20
By pressing 2 and then pressing area 211, "anti" is displayed in area 211 as shown in the figure, and the conversion unit is set. In this way, the conversion start instruction area 208
By pressing “0.033333333 town”
is converted to "0.333333333 anti" and displayed.

[Operation Description (Figures 1 to 6)] Figures 6 (A) and 6 (B) are flowcharts showing the input/output and arithmetic processing in the unit conversion calculator of the embodiment, and the control program that executes this processing is executed by the control unit. 100 ROM2
It is stored in 2. This control process is started upon receiving an input from the digitizer 23.

First, in step S1, the digitizer 23 selects the calculation start instruction area 208 (6=) or 209 (->
) is pressed. When either the calculation start instruction area 208 or 209 is pressed, the process advances to step S2, and it is checked whether the unit to be converted has already been specified, that is, whether the unit to be converted has been specified and displayed in areas 211 and 212. investigate. If the unit to be converted is not specified, the process advances to step S3, and an error message is displayed on the LCD 22. And step S4
When the digitizer 23 inputs that the error has been confirmed, the process proceeds to step S25, where the flag and stored unit information are erased and the process ends. If so, the process advances to step S5, and it is checked whether the area 2os(a=) has been designated, that is, whether a calculation from right to left has been designated. When the area 208 is designated, the process advances to step S6;
Check whether ID2 is "0". If ID2 is °O'', proceed to step S7 and set ID1=O;
If the value is not “MO”, the process proceeds to step S8, and the value input to ID2 is converted to the area 21 from the unit specified in the area 212.
The unit is converted into the unit shown in 1 by referring to a conversion table stored in the ROM 12. Next, the process advances to step S9, and the conversion result is displayed on ID1.

In this way, for example, as shown in FIG. 5, the unit of numerical data is converted to the left from "cho" to "anti".

If the input is not in the calculation start instruction area 208 (middle) in step S5, it is assumed that the calculation start instruction area 209 (=>), which instructs calculation from left to right, has been specified, and the process proceeds to step SIO. The calculated value IDI is °゛O
Check whether it is ゛゛. If IDi is "0", ID2 is set to "0" in step Sll, but if IDI is not "0", the process proceeds to step S12, and the area 212 is set from the unit indicated by area 211 in the same manner as step S8. ID2 is calculated by converting to the indicated unit. The process then proceeds to step S13, where the calculation result is displayed on ID2 of the LCD 22, and the process ends.

FIGS. 2 and 3 are diagrams showing display examples of the calculation results obtained in this way, in which "100 tsubo" degrees are converted into units in the right direction, that is, "square meters" and "towns", respectively.

On the other hand, if the calculation start instruction area is not specified in step S1, the process advances to step S12, and the unit areas 201 to 20
Check to see if any of 7 has been specified. here,
If a unit area has been designated, the process proceeds to step S], 3, where the designated unit area is stored and a flag indicating that the unit designated area has been designated is turned on. This unit instruction flag is provided in the RAM 13.

If the unit area is not specified in step 512, the process advances to step S15, and it is checked whether area 211 or 212 has been specified. When either area 211 or 212 is specified, the process advances to step S16, and it is checked whether a unit area was specified immediately before. This is checked by checking whether the unit indication flag is on. If the unit instruction key was not input immediately before, the process proceeds to step S25, but if the unit instruction was input immediately before, step S1
7, the unit information stored in step S13 is set in the designated area. As a result, unit information is written and displayed in area 211 and area 212, as shown in FIG.

If the area 211 or 212 is not instructed in step S15, the process advances to step 318, where it is checked whether the handwritten input is to IDI or ID2. Proceeding to step S19, the dot on the liquid crystal 22 corresponding to the input position manually entered by the digitizer 23 is displayed in black. Then, in step S20, it is checked whether one character has been input. If the input of one character is completed and l/1 is not reached, the process returns to step S18, but if the handwritten input of one character is completed, the process proceeds to step S21, where character recognition of the input character is executed.

Next, the process advances to step S22, and it is determined whether the character input is character input or deletion (input by overwriting G2 over an already input character). When deleting, the process advances to step S23, and the overwritten characters are stored in the RAM 13.
It is also deleted from the liquid crystal display 22. on the other hand,
If it is not a delete operation, the process advances to step S24, where the input characters are corrected and displayed on the liquid crystal 22. In this way, the process proceeds to step S25, where the stored unit instruction flag is turned off and the process ends. As a result, the numerical data "
100'' can be input into ID1.

As explained above, as shown in FIG.
After setting the unit information to 11 and 212, enter the numerical data to be converted to IDI, and press the calculation start instruction area 209 (a
), the unit conversion from "100" tsubo to "square meter" can be calculated. Also,
As shown in Figure 4, leaving the 100 tsubo as it is,
"100" tsubo can be converted to "town" by changing "square meter" to "town" and specifying the calculation start instruction area 209 (middle) as in the case of Fig. 3. , by leaving "0.033333333 town" as is, changing "tsubo" in area 211 to "anti", and pressing calculation start instruction area 208 (c=), the calculation result as shown in FIG. 5 is obtained. Obtainable.

As described above, according to this embodiment, it is possible to convert the units of input numerical data while directly specifying the units, so a calculator with extremely good operability can be provided.

[Description of other embodiments (Figures 7 to 9)] Figure 7 is a diagram showing an example of a conversion display for weight conversion, Figure 8 is a diagram showing an example of a conversion display for volume conversion, and Figure 9 is a diagram showing an example of a conversion display for converting volume. FIG. 2 is a diagram showing an example of a conversion display for performing distance conversion.

All of these have the same configuration as the computer of the above-described embodiment, and can perform calculations with simple operations using the same human power as in the above-described embodiment. In addition to this, by allowing the user to register a conversion table on the RAM 13, it is possible to provide a calculator that can, for example, perform conversion calculations for currencies of various denominations that change daily.

Further, in this embodiment, the calculation start instruction area is shown as a rectangular area, but it is not limited to this, and these areas can be
For example, it may be indicated by adding "O" or the like.

Furthermore, although the description has been made using an LCD (liquid crystal) as a display device, the present invention is not limited to this, and for example, an FLC or the like may be used.

That is, since various applications are possible without departing from the spirit of the present invention, the present invention is of course not limited to this embodiment.

As explained above, according to this embodiment, the digitizer for inputting numerical data etc. and the display data of the display unit (LCD) are matched, and the unit conversion instruction area, calculation start area, and numerical input area are displayed on the same screen. By setting up areas and directly specifying these areas with a digitizer to input numbers, characters, etc. and specify items, you can easily input numerical values and give instructions for various unit conversions without creating a program. can.

Further, the order of manual input is not particularly specified, and input can be made in any order, which has the effect of significantly improving operability.

[Effects of the Invention] As explained above, according to the present invention, by directly indicating the corresponding location on the display screen, data input,
It has the effect of being able to make changes, corrections, and unit conversion instructions.

[Brief explanation of the drawing]

Figure 1 is a block diagram showing the schematic configuration of the unit conversion calculator (calculator) of the embodiment, Figure 2 is a diagram showing an example of the display screen of the unit conversion calculator (calculator) of the embodiment, and Figures 3 to 5 are Figure 6 is a flowchart showing the control operation of the cPU in the unit conversion calculator of the embodiment, and Figures 7 to 9 are diagrams showing display examples when performing each unit conversion. It is a figure which shows the example of a display. In the figure, 11... CPU, 12... ROM, 13...
・RAM, 21...LCD driver, 22...LC
D (liquid crystal display section), 23... digitizer, 24...
・A/D humbator, 100...control unit, 102...
・Mechanism section, 210-207...Unit conversion instruction area, 2
11,212...Unit display area, 208,209...
・This is the calculation start instruction area. 3rd 4th D2

Claims (3)

[Claims] (1) An electronic computer that inputs numerical data and various unit conversion instructions and executes calculations corresponding to the input unit conversion, and displays the input numerical data and unit conversion instruction area on the same display screen. a display means for displaying the numerical data inputted by the input means; recognition means for recognizing and inputting characters; designated unit display means for displaying a unit specified by the input means in a specific area of the display unit; and a recognition unit for displaying the unit specified by the input unit in a specific area of the display unit; correspondence,
An electronic computer comprising: a control means for controlling the unit conversion calculation to be executed in response to a calculation start instruction inputted from the input means. (2) The computer according to claim 1, wherein the input means is a substantially transparent digitizer provided on the display screen. (3) The computer according to claim 1, wherein the units displayed in the specific area and the recognized numerical data can be used repeatedly even after unit conversion is performed.