JPS58155468A - Electronic formula dictionary - Google Patents

Abstract

PURPOSE:To improve considerably the operability of input, by referring to a variable memory to display variable names, for which variable data are substituted, and variables names, for which variable data are not substituted, distinctively from each other. CONSTITUTION:Contents stored in a dictionary memory 6 are read out by a search circuit 7 and are written to an RAM10. The RAM10 is divided to a formula area 10a and a modified formula area 10b. Addresses of the RAM10 are designated by an address circuit 11, and read-out data are sent to an instruction decoder 13 and a work memory 14. The decoder 13 decodes data from the RAM10 and not only gives the decoded output to an operation processing circuit 9, the circuit 11, and the memory 14 but also inputs the decoded output to a variable memory 15. The memory 15 is provided with a variable name area and a flag area, and data is written in each area through a controlling part 5 and the device 9 when a variable key 4 is operated. The memory 14 is controlled by the decoder 13.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an electronic official dictionary that performs calculations based on stored formulas.

In recent years, electronic translation machines that can mutually translate languages from different countries have been put into practical use and are becoming popular.However, by using the principle of this electronic translation machine, it is possible to memorize a large number of formulas in memory. It is conceivable to construct an electronic official dictionary by
In particular, formulas for financial calculations are complex, and it is often necessary to substitute various amounts for each variable and perform calculations. Therefore, an official dictionary in which various formulas are simply stored in memory cannot be used to transform the formulas, perform calculations, etc., and has a problem of very low utility value.

In order to solve such problems, the applicant first filed a patent application in 1973.
An application was filed for an electronic official dictionary as No. 6-141273. According to the electronic official dictionary of this application, it is very convenient because it not only allows you to memorize various formulas, but also allows you to transform formulas, perform calculations, etc.
The problem remains that variable names must be associated with specific numerical values, such as "1" to "5", manually, and it is difficult to distinguish between variables to which data has been assigned and variables to which data has not yet been assigned. has been done.

The present invention has been made in view of the above points, and it is possible to distinguish between variable names to which variable data has been assigned and variable names to which variable data have not been assigned, and to display variable data by variable name without being associated with specified numerical values. An embodiment of the present invention will be described below with reference to the drawings. In Fig. 1, 1 is a key input section, which includes various input keys such as numeric keys, kana keys, funx keys, and keys, as well as formula keys 2 for specifying formulas, ANS keys 3 for specifying answers, and variable keys for specifying variable inputs. 4, etc., and its key human power data is sent to the control section 5. The control unit 5 controls the dictionary memory 6, the search circuit 7 of the dictionary memory 6, the input word renostar &, the ALU (arithmetic processing unit) 9,
RAM (Random Access Memory) 10, this RAM
The address circuit 11, display section 12, etc. of M10 are controlled. As shown in FIG. 2, the format of the data stored in the dictionary memory 6 is made up of areas for ``Bunmei'', ``Official'', ``Modified address'', and ``Modified format''. Up to five types of "transformed forms" are stored depending on the form of the expression. The following table shows examples of the formulas stored in this dictionary memory 6 and their modified forms.
"Fukuri" is a formula for calculating compound interest, where FV is the total principal and interest (final price, future value), Pv is the current price, ■ is the interest rate, and N is the period. Also, "loan (kimak)", "loan (kissier)"
are the formulas and modified forms for unpaid loans and early payments.

Table 1 In the loan formula in the table above, PV is current value, PMT is payment,
N is the period and ■ is the interest rate. Furthermore, "Newton's method" refers to a program that calculates interest rates using Newton's method. The contents stored in the dictionary memory 6 are read out by the search circuit 7 and written into the RAM JO as shown in FIG. This RAM
10 is divided into an official area 10m and a modified area 10b. The address of the RAM 10 is specified by the address circuit 11, and the data read from the RAM 10 is sent to the instruction decoder 1.
3 and the work memory 14. The instruction decoder 13 decodes data from the RAM io and provides the decoded output to the ALU 9 , the address circuit 11 , the work memory 14 , and inputs it to the variable memory 15 . The variable memory 15 includes a variable name area, a variable data area, and a flag area, and when the variable key 4 is operated, data is written into each area via the control section a 5 and the ALU 9. ! ,friend,
A work memory 14 is controlled by the instruction decoder 13.

Next, the operation of the above embodiment will be explained with reference to the flowchart of FIG. When a key is manually operated in the key manual section 1, the process proceeds to a key determination step S through a key sampling step and a step S1. This key judgment Stella f8. Then, it is determined whether input was made using variable key 4, official key 2, AN8 key 3, or any other key input, and if it is an official input, the official name search step 81s If it is a variable input, the variable search is performed. stella f8
4. kN8 If it is manual power, proceed to variable name search step 81s.If it is other key manual power, proceed to key manual power step S6.

When calculating using a formula, the name of a public official is inputted from the key input section 1 (by operating the Kana key), and then the official key 2 is operated. For example, when calculating compound interest, the official key name ``flag'' is specified by operating the key, and then the formula key 1 is operated. The official hair "flag" input by operating the above-mentioned Kana key is the key judgment Stella f8. in Fig. 3. From there, the process proceeds to the input processing step S-, where the input word is written into the input word register 8. Thereafter, display preparation is performed in step ST, and the process proceeds to display step S- through key sampling step 81, where "flag" is displayed at the bottom of the display section 12 as shown in FIG. 4(a)K. . After that, in step 81, the presence or absence of a flag for the variable is checked, and the process returns to step S1 after underlining the corresponding variable name in step S1. However, since the formula is not displayed at this point, this process is not performed. Not possible. Next, when the official key 2 is operated, the content of the operated key is determined in the key judgment step, and the process proceeds to the official search step 8=. In this step 8m, the search circuit 1 searches the dictionary memory 6 according to the data written in the input word register 8, reads out the compound interest calculation formula and the modified form address, and stores the compound interest calculation formula and the modified form address in the RAM 10 as shown in step Stt.
Write in official area 101.

Also, at this time, the variable names in the formula are written into the variable name area of the variable memory 15. After that, display preparation step S1
Then, the process proceeds to display step 8s through the key sampling step and step SL, and the compound interest formula is displayed as "rFV=PVX(1+I)↑N" on the upper part of the display section 12, as shown in FIG. 4(b). In addition, "↑" represents the power number 0
Next, proceed to Step No.S., and in the variable memory 15,
All the flags for the variable are set or set, but it is determined whether there are any unset flags. Which 7 at this point?
Since the lag is not set, it is determined that there is an unset flag, so proceed to Stella fs1 and set rFV, PV, I, N.
All variables of J are underlined.

Next, a variable is specified using the variable key 4 from the key manual section 1. For example, if you use the above compound interest formula to calculate ``If the principal is 500,000 yen, the annual interest rate is 600, and the compound interest is compounded every year, how much will be the total principal and interest after 7 years?'' For example, first As shown in FIG. 4(,), perform the key operation for "rN=7r variable". The key human power for the above rN=7] is step S
- is inputted and displayed at the bottom of the display section 12. Then, in the next operation of the variable key 4, the variable name "N" in the variable memory 15 is searched in step 2f84, and substitution processing is performed as shown in step 81.

In the substitution process of step 81m, the input numerical value passes through the control unit 5 and ALU 9, and the numerical value "7" indicating the period (year) is written into the corresponding area of the variable memory 15, and then in step 811, the corresponding 7 lag is set. , - is to be recorded. After that, Ste. f8 +81. The program proceeds to step S, . . . through 88 and S, where variable names for which flags are not set are underlined. Similarly, for the interest rate I, as shown in Figure 4 (d), r I = 0.06 r variable, and for the principal PVK, as shown in Figure 4 (・), r pv = sooooo "r variable" key operation. Stella f81. The substitution process is performed, and the interest rate and principal amount are respectively written in the corresponding areas of the variable memory 15, and the data correspondingly written in step S11 is sequentially displayed on the lower part of the display section 12 at the time of writing. . Then, if all flags for the variable are set, flag check,
From step 8-8, the process advances to display step 814, where the formula is displayed. However, after inputting the above variables, as shown in Fig. 5 (f
)) Perform the r F V r AN8 J J key operations as shown. By this key operation, the process advances to step S through steps S1 and S8, and a variable name search is performed.

After that, Stella F81. The program proceeds to STELLA fil-, where it is determined whether the formula for obtaining the answer is a representative formula or not.If it is a representative formula, the program advances to STELLA fil-, where the formula is executed. That is, R
Formulas and variable memory 15 in formula area 10a of AM10
The same calculation as the normal program calculation is performed in the ALU 9 using the data in the calculation, and the calculation result is r751815.1295J in the above calculation example, and the corresponding area of the variable memory 15, summation of principal and interest FV is written in the storage area and displayed at the bottom of the display section 12.

1+. When obtaining an answer using a modified form of the above formula or confirming variables that have already been input, operate the desired symbol and the AN8 key 3 in the same way as when obtaining the above representative formula. For example, if you want to find the period N, use the fourth
As shown in Figure (g), perform the r N r ANS J J key operations. With this key operation, the key judgment step S is passed through the variable name search step SS, and then step! 81
Proceeding to step 1, it is determined whether it is a representative ceremony or not. In this case, it is not a representative formula, so Stella fi1m to SI? Then, it is determined whether or not the corresponding flag is set. If the correspondence flag is set, that variable data has already been input, and the process proceeds to step St@, where the variable data is successively read out from the variable data area of the variable memory 15 and displayed on the lower row of the display section 12. Further, if it is determined in step 81 that the correspondence flag has been reset, that variable data has not been input, so the process proceeds to step S1, and the official area 1 of the RAM 10 is
Refer to the modified address written in 0a, read the modified form from the corresponding address in the dictionary memory 6, and proceed to step S.
The data is written to the transformation area Job in RAM 10 as shown in FIG.

Next Stella 7' 8. , proceed to the above transformation area 1
A program calculation is executed using the transformed form read in 0b and the data in variable memory 15, and the answer is obtained and stored in variable memory 1.
5 and displays it on the display section 12.

In the same manner, the values of other variables can be obtained.As described above, according to the present invention, variable names that have been assigned variable data can be distinguished from variable names that have not been assigned. Furthermore, variable data can be input as is by the variable name without being associated with a specific numerical value, and operability can be significantly improved.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, and FIG. 1 is a circuit configuration diagram, FIG. 2 is a storage data format of the dictionary memory in FIG. 1, FIG. 3 is a flowchart showing the operation contents, and FIG. FIG. 7 is a diagram showing an example of a key operation and display contents corresponding to the key operation. 1...Key human resources department, 2...Official key, 3...AN
S key, 4...Variable key, 6...Dictionary memory, 1o
...RAM, 23.Instruction decoder, 15.Variable memory. Applicant's agent Patent attorney Takehiko Suzue 14 (9) N entrance

Claims (2)

[Claims] (1) a dictionary memory storing various formulas; and a search means for searching the dictionary memory by inputting a formula name, reading out a formula corresponding to the specified formula name, and displaying the formula on a display section;
A variable memory provided corresponding to each variable in the above formula, a means for storing the input variable data in the variable memo') IIC, and a means for storing the input variable data in the above variable memory for the formula displayed on the display section. means to distinguish variable names to which variable data has been assigned and uninput variable names, and to calculate the answer to the specified variable by performing calculations using the above formula and the variable data input to the variable memory after inputting the variable data. An electronic official dictionary characterized in that it is equipped with arithmetic means for calculating. (2) A dictionary memory that stores various formulas, a search means that searches the dictionary memory by inputting a formula name, reads out the formula for the specified formula name, and displays it on the display, and corresponds to each variable in the formula. A variable memory provided with a variable name area and a variable data area, and a variable name area of the variable memory are searched manually, and a change at''-y is written in the variable data area for the specified variable name area. and calculating means for calculating an answer to a specified variable by performing calculations using the formula and the variable data input into the variable memory after inputting the variable data.