JPH0545988B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a character processing device for creating sentences, and in particular is capable of performing calculations using numerical values in sentences.

2. Description of the Related Art Conventionally, some character processing devices are capable of performing calculations using numerical values in an input sentence and finding the results in the sentence.
In this case, calculations can be performed by inputting a calculation formula in advance by operating a special key, and then executing the calculation formula. Therefore, in order to change the calculation procedure, it was necessary to change the calculation formula stored in an area separate from the text. Although such a method is convenient for repeatedly performing complex calculations, it is rather time-consuming and inconvenient for performing simple calculations with simple operations.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to eliminate the above-mentioned drawbacks and to make it possible to calculate numerical values in a sentence without providing a storage area for performing calculations in a sentence. To provide a character processing device capable of performing any desired calculation based on a calculation formula using characters and operators by specifying a part of the text and the position of the calculation formula in a sentence. There is a particular thing.

Hereinafter, the present invention will be explained in detail with reference to the drawings.

FIG. 1 shows one embodiment of the invention, where
The CPU is a microprocessor that performs calculations and logical decisions. AB is an address bus that transfers signals indicating control targets, CB is a control bus that supplies control signals to various control targets, and DB is a data bus that transfers various data between devices.These buses AB, CB, Devices connected via the DB are controlled by the microprocessor CPU.
The ROM is a control memory in the form of a read-only memory, for example, and stores control procedures for the microprocessor CPU. RAM is a random access memory used for temporary storage of various data, including flag CF, memory IR, IF, W1, W2,
W3, 3 cursor save memory CSR1, CSR
2. Built-in CSR3, calculation formula memory KBUF and character count memory KLEN. KB is the keyboard, CR is the cursor register, BUF is the buffer register, CG is the character generator, CRTC
is a CRT controller that controls the display CRT, and PRT is a printer that prints out the contents of the buffer register BUF.

The cursor save memory CSR1 stores the first (leftmost) cursor position when specifying a part of the numerical array in a sentence, and the cursor save memory CSR2 similarly stores the last (rightmost) cursor position. Further, the cursor save memory CSR3 stores the cursor position where a calculation formula exists when the calculation execution key EK is input and a calculation is to be executed. The calculation formula memory KBUF stores the calculation formula taken in from the position indicated by CSR3, as illustrated in FIG. For example, assume that it has a capacity of 10 words. The character count memory KLEN stores the total number of characters in the calculation formula (5 in the example of FIG. 2).
The characters following = in the calculation formula memory KBUF indicate calculation results.

The keyboard KB is used for entering text, editing, entering calculation formulas, etc. As shown in Figure 3, it has character keys AK, cursor keys CK, and range indication keys.
It has function keys such as HK and calculation execution key EK. The cursor register CR stores the position on the display CRT, that is, the position determined by row and column, and stores sequential numbers from 0 to 39 indicating the position on the display CRT. It changes under the control of the microprocessor CPU as the cursor CA (see Fig. 5) moves. Further, the cursor CA is displayed on the corresponding line and column on the display CRT by the CRT controller CRTC based on the sequential number in the cursor register CR. The buffer register BUF has a capacity of, for example, 40 words, and stores data codes such as sentences and numerical values.As shown in Figure 4, it consists of 5 lines in the vertical direction and 8 digits in the horizontal direction, and its contents are the same as this positional relationship. 8 line digit display
Displayed on CRT via character generator CG. In this way, the microprocessor
The CPU reads a desired character pattern based on the data code stored in the buffer register BUF, displays the character pattern on a display CRT serving as an output means, or displays it on a printer PRT.
Print out by .

Next, the operation of the embodiment of the present invention having the above-described configuration will be explained. Input of text and numerical values after power is turned on is performed using a known technique, so detailed explanation will be omitted here. Assume now that in the initial state of this device, a data code corresponding to a character pattern as shown in FIG. 5 is stored in the buffer register BUF. The calculation is performed in the following steps.

Use the cursor key CK to move the cursor CA to the number you want to calculate, then press the range indication key.
Enter HK.

) move the cursor CA further to the right from the indicated position, and place the cursor CA on the next value.
and enter the range indication key HK for the second time.

Next, place the cursor at the position where the calculation formula exists.

Next, enter the calculation execution key EK.

According to the above procedure, the numerical values in the range specified by the first and second cursor positions are quoted by the calculation formula specified in step (step), and calculation is performed. The results will be displayed at the display position.

Next, the operation of performing calculations will be explained in more detail based on FIGS. 5, 6, 7, and 8. In each step of the flowchart shown in FIG. 7, the following processing is performed.

Process 1: Waiting for key input.

Process 1.1: Was cursor key CK input? 1.2: Was the range indication key HK input? 1.3: Is the cursor key CK specified for the first time?
(Check CF, if 0 is Yes, if 1 is No) 1.4: Was calculation execution key EK input? Process 2: Move cursor CA to the position corresponding to cursor register CR.

Process 3: Store the position of cursor CA in cursor save memory CSR1. Set flag CF to 1.

Process 4: Store the position of cursor CA in cursor save memory CSR2. Reset flag CF to 0.

Process 5: Store the cursor CA position in CSR3,
The calculation formula pointed to by the cursor is converted to the corresponding BUF.
Import from to KBUF.

Process 6: Perform calculations, store the results in BUF, and display them.

Processing 7: Execute editing processing, etc.

Next, the above-mentioned process 6 will be explained in more detail.

Processing 6.1 Set the contents of KLEN to W1 and write KBUF
Import the first character of into the CPU. (Import from the left end) Process 6.2 Check whether it is an alpha bet. If yes, proceed to process 6.3; if no, proceed to process 6.10.

Processing 6.3 According to Alphabet, CSR1,
Extract numerical values in order from the numerical range specified by CSR2.

Process 6.4 Check if IR=0, if yes, process 6.5
If no, move on to process 6.9.

Process 6.5 W1←W1−1 Process 6.6 Check whether IR=0, and if yes, Process 6.6
If no, move on to process 6.7.

Processing 6.7 Check whether W1=0, and if no, process
Go to 6.1, if yes, end the process.

Process 6.8 Execute the instruction represented by the operation symbol input to IR.

Reset IF and IR to 0.

Processing 6.9 Load symbols representing arithmetic instructions into IR.

Process 6.10 Check whether the symbol represents an arithmetic instruction, and select yes
If so, move on to process 6.11, if no, proceed to process 6.12
Move to.

Process 6.11 Load symbols representing arithmetic instructions into IR.

Process 6.12 If = or yes, process 6.13; otherwise, process 6.13 Set W1←W1-1, and if there is an alpha bet, write the calculation result to the right end of the numerical range.

The above processing will be further explained.

In process 1, a key input is waited. When the cursor key CK is input, the contents of the cursor register CR are changed in process 2, the cursor CA is moved to the position corresponding to the cursor register CR, and that position is displayed on the display CRT.

When the range designation key HK is input, the contents of the first cursor register CR are stored in the cursor save memory CSR1 in process 3. When the cursor CA is further moved and the range designation key HK is input for the second time, the contents of the cursor register CR are stored in the cursor save memory CSR2 in process 4. In the example shown in Figure 5, the cursor save memory
The contents of CSR1 are 8, cursor save memory CSR
The content of 2 is 15.

If you move the cursor further, align it with the position where the calculation formula exists, and input the calculation execution key EK, the current cursor position (here
27) is stored in CSR3, and the calculation formula is imported from the position indicated by CSR3 and stored in the calculation formula memory.
Stored in KBUF. Further, the number of characters in KBUF is stored as 5 in the character number memory KLEN.

Next, the process moves to process 6, and the contents of the buffer KBUF are fetched from the left end. In this case, it is alpha-betting A, and this is the first alpha-betting, so take out the number from the left end of the numerical range and store it in memory.
Put it in W2 of RAM.

Next, move on to process 6.4 and check whether the instruction is in the memory IR. In this case, YES, so move on to process 6.5.
The contents of W1 are decremented by 1 by the CPU. Then memory IF = 0
In this case, return to process 6.1. Moving on to process 6.1 again, the second data indicated by W1 is extracted from KBUF. Process 6.2 returns No, and Process 6.10 returns Yes, so move on to Process 6.11.
Put the instruction into memory IR. Next, move on to processing 6.5,
Do the same thing as above and move on to process 6.1 again. Next, "B" of KBUF is fetched according to the contents of W1. This is recognized as alpha in Process 6.2,
"34" is imported from BUF to memory W3. Next, in process 6.4, the result is no, and 1 is set in the memory IF. In process 6.5, the contents of memory W1 are reduced by -1
and set it to 2. Next, move on to process 6.6 and check whether IF=0. In this case, it is no, and it is calculated in process 6.8,
Put the result into memory W3. Also resets IR and IF.

Next, through process 6.7, the process returns to process 6.1.
The contents indicated by memory W1 are retrieved from KBUF. This content becomes yes in process 6.12, and knowing the end of the operation, subtracts 1 from the content of W1 and writes the next content.
Extract from KBUF. If it is a character, it indicates the location of the operation result, so memory W3
Extract the result and write it to the right end of the BUF where the numerical range is defined. In this case, B (14)
Writes 4 in , 6 in B (15), then moves to process 6.5, sets the contents of W1 to -1L, becomes yes in processes 6.6 and 6.7, and ends the process.

In the above example, it is assumed that the numerical values to be calculated are contained in one line in the horizontal direction, but they may be placed in the vertical direction. Also, when there are numbers arranged in a matrix in the text, you can specify diagonal lines so that horizontal calculations can be performed simultaneously on multiple lines according to the input formula. . In addition, in the above example, A to Z are used in order from the left as the letters of the calculation formula to be quoted in the text, but numbers (1) to (9) and appropriate symbols can be changed from keys on the keyboard. Various key inputs can be used as long as they can be input.

In the above example, only characters and operators are used in the calculation formula, but it is also possible to use numerical values directly in the calculation formula, such as A+B+10=C. .

According to the present invention, when performing calculations using numerical values in a text, there is no need to enter a calculation formula by performing special key operations before creating the text. Calculations can be performed using formulas. Furthermore, since calculations can be performed by modifying formulas on the screen as necessary, the calculation procedure can be easily changed, and the calculation process in the character processing device is simplified.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing one embodiment of the character processing device of the present invention, FIG. 2 is a line diagram showing the contents of the calculation formula memory, FIG. 3 is a layout diagram showing an example of the keyboard layout, and FIG. The figure is a diagram showing the positional relationship between the buffer register and the CRT, Figure 5 is a diagram showing an initial CRT display example in the character processing device of the present invention, and Figure 6 is a diagram showing the CRT displaying the calculated results. 7 is a flowchart showing an example of the operating procedure in the character processing apparatus of the present invention, and FIG. 8 is a detailed flowchart of process 6. CPU...Microprocessor, AB...Address bus, CB...Control bus, DB...Data bus, ROM...Control memory, RAM...Random access memory, CSR1, CSR2, CSR3
...Cursor save memory, KBUF...Calculation formula memory, KLEN...Character count memory, KB...Keyboard, CR...Cursor register, BUF...Buffer register, CG...Character generator, CRTC...CRT controller , CRT...display, PRT...printer, CA...cursor.

Claims (1)

[Scope of Claims] 1. An input means for inputting information including letters, numbers, and symbols; a first storage means for storing information input by the input means; and information stored in the first storage means. A display control means for displaying information, and among the information displayed by the display control means,
The first one specifies the desired group of numbers represented by a string of numbers.
a second specifying means for specifying a desired algebraic expression in which the variable part is expressed in characters among the information displayed by the display control means; and an instruction means for instructing execution of the operation. and, upon receiving the instruction from the instruction means, for each variable part of the algebraic expression specified by the second specification means,
A character processing device comprising: an execution means for executing an operation of an expression in which each numerical value of the numerical value group specified by the first specifying means is substituted in a manner corresponding to the order of appearance on the display. 2. The result of the calculation by the execution means is transferred to the first
Among the numerical values specified by the specifying means, the variable part representing the value of the algebraic expression specified by the second specifying means is displayed at the position of the corresponding numerical value in the order of appearance on the display. 2. The character processing device according to claim 1, further comprising second display control means for controlling.