JP2000076196A - Conversion mathematical expression registration type electronic computer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electronic computer with a conversion function capable of performing many kinds of conversion calculation and confirming a registered conversion rate (conversion mathematical expression in this invention) at all times. SOLUTION: A conversion mathematical expression memory 16 for which an input person registers and rewrites the conversion mathematical expression (mathematical expression composed of the combination of arithmetic symbols and numerical values) matched with contents to be converted through an input key 17 is provided in a RAM 14. By depressing an execution key 4, the conversion calculation is performed in a CPU 13 corresponding to the conversion mathematical expression registered in the conversion mathematical expression memory 16. Separately from a display screen 1 for calculation, a conversion mathematical expression display screen 2 for exclusively displaying the registered conversion mathematical expression is provided.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electronic computer with a conversion function that can perform conversion calculations such as conversion of the amount including consumption tax, conversion of foreign currency rates, conversion of area per square meter, and the like.

[0002]

BACKGROUND OF THE INVENTION consumption tax guide people, the increase in international travel, with the combined use of m ² and a basis in the area of display, in the Japanese life, consumption tax included amount of money conversion, currency rate conversion, the basis conversion, etc.,
Opportunities to perform conversion calculations have increased in many aspects. with this,
Each electric machine manufacturer has developed an electronic computer with a conversion function that can easily perform the conversion calculation. Among them, the area unit conversion function 43 and the like are set in advance so as to correspond to a conversion rate such as a tsubo conversion that does not change (eg, 1 tsubo = 3.3 m ² ).
The input user performs conversion via the input key 66 so as to correspond to a "computer with a registered conversion rate" registered in M42 or a conversion rate fluctuating such as a foreign currency rate conversion or a conversion including consumption tax. Rate (numerical value or percentage)
There is a “conversion rate registration type electronic computer” that can be registered and rewritten. Many of the commercially available electronic devices with a dedicated conversion function, such as “exclusively for area conversion” and “exclusively for foreign currency rate conversion,” are limited due to the limited number of key buttons and the ease of operation procedures. Divided into calculators. The description of the conventional "electronic computer with registered conversion rate" and "electronic computer with conversion rate registration type" will be given in accordance with an operation procedure, a display method, and the like. First,
The description of the “computer with a registered exchange rate” will be given based on FIGS. 8, 9 and 10. Here, as a reference example,
Use the "area in terms of dedicated exchange rate registered electronic computer", "250 square meters is, what m ² or. ] Is calculated. FIG. 8 is an external view of a “computer with a registered conversion rate exclusively for area conversion” in which reference numeral 30 denotes a display screen for displaying input numerical values and conversion results;
Is a conversion key for switching the role of a conversion unit key to execute a conversion calculation.
Reference numeral 3 denotes an operation symbol key for executing the four arithmetic operations; 34, an equal key; 35, a clear key for clearing the storage of the RAM 45 and the display screen 30; and 36, a power supply. FIG. 9 is an internal block diagram of a “computer with a registered conversion rate exclusively for area conversion”, in which 30 is a display screen, and 41 is a display screen 3
An LCD drive circuit 42 for controlling the drive of 0, a ROM 4 for storing an area unit conversion function 43 such as a tsubo conversion rate, and the like.
Reference numeral 4 denotes a CPU for performing calculations and the like, and reference numeral 45 denotes a RAM for storing data from the input keys 46. FIG. 10 is an operation explanatory diagram showing the state of the pressed keys of the “computer with a registered conversion rate dedicated to area conversion” in the reference example, and the state of the display screen and the like. First, turn on the power supply 36 and start it up.
Then, the display screen 30 is set in a state of waiting for input. FIG. 10A shows a state of the display screen and the like at this time. Then, the user presses the value [250 (tsubo)] to be converted with the conversion unit key and the numeral key 32, stores it in the RAM 45, and displays it on the display screen. FIG. 10D shows a state of the display screen and the like at this time. Next, the conversion key 31 is pressed to perform the conversion calculation, and the role of the conversion unit key and the numeral key 32 is switched to the conversion unit key for executing the conversion calculation. FIG. 10 shows the state of the display screen and the like at this time. Then, by pressing the key to execute the conversion calculation a basis to m ² (in terms of unit keys and numeric keys 32 of "1" in FIG. 8), in accordance with the area unit conversion function 43 which is previously registered in the ROM 42, CPU
44 [250 ^{(basis) × 3.3 (m 2) =} 825
(M ² )], and the display screen 30 displays the conversion result [825 (m ² )]. FIG. 10C shows the state of the display screen and the like at this time. As described above, "Electronic computer with registered exchange rate"
Indicates that the input user inputs a numerical value to be converted, and when the convert key is pressed, the role of the input key is switched to a conversion unit key for executing the conversion calculation.
The PU performs conversion calculation according to a unit conversion function registered in the ROM in advance. Next, a description will be given of the "conversion rate registration type computer" based on FIGS. 11, 12, and 13. FIG. Here, as a reference example, "a conversion rate registration type computer dedicated to the conversion of the amount including consumption tax"
"When the consumption tax is 5%, how much is the amount including the consumption tax for the 25,000 yen product? ] Conversion calculation. FIG. 11 is an external view of a “conversion rate registration-type electronic computer dedicated to the conversion of the amount including the consumption tax”, 50 is a display screen for displaying the input numerical value and the conversion result, 51 is the registration of the conversion rate (tax rate), and , A tax rate registration key depressed at the time of determination, 52 is a tax included amount conversion execution key for executing the conversion calculation by the CPU 63, 53 is a numeric key, 54 is an operation symbol key for executing four arithmetic operations, 55 is an equal key, 56 is A clear key 57 for clearing the storage of the RAM 64 and the display screen 50 is a power supply. FIG. 12 is an internal block diagram of a “conversion rate registration-type computer for exclusive use of the consumption tax-inclusive amount conversion”. Reference numeral 50 denotes a display screen; CPU for performing calculations, etc., 65 is a tax rate memory for storing the tax rate registered by the input person, 64 is a tax rate memory 65
And a RAM for storing data from the input keys 66. FIG. 13 is an operation explanatory diagram showing the state of the press keys and the display screen of the “conversion rate registration-type electronic computer dedicated to the conversion of the amount including the consumption tax” in the reference example. First, the power supply 57 is turned on and activated, and the RAM 64 and the display screen 50 are set to the input state. FIG. 13C shows a state of the display screen and the like at this time. In order to register a conversion rate (tax rate), a tax rate registration key 51 is pressed. Then, the roles of the input key 66 and the display screen 50 are switched to those for registering the conversion rate (tax rate). FIG. 13E shows a state of the display screen and the like at this time. In addition, many of the commercially available "for exclusive use of the amount conversion including consumption tax" have a symbol [%] displayed at the right end as shown by (h) in FIG. Next, the numerical value [5 (%)] of the conversion rate (tax rate) is depressed with the numeric key 53 and stored in the tax rate memory 65. FIG. 13F shows a state of the display screen and the like at this time. Then, if there is no mistake in the conversion rate (tax rate), the tax rate registration key 51 is pressed again. Then, in the tax rate memory 65,
[5 (%)] is registered, and the roles of the input key 66 and the display screen 50 are switched to those for normal calculations, so that the display screen 50 displays [0]. FIG. 3 (f) shows a state of the display screen and the like at this time.
Then, the numerical value [25000]
(Yen)] and store it in the RAM 64, and display screen 5
0 is displayed. FIG. 13E shows a state of the display screen and the like at this time. Then, the user presses the tax-inclusive amount conversion execution key 52, and the CPU 63 controls the tax rate memory 65.
According to the conversion rate (tax rate) registered in
(Yen) × 1.05 = 26250 (yen)], and the conversion result [26250 (yen)] is displayed on the display screen 50.
Is displayed. FIG. 13 (n) shows a state of the display screen and the like at this time. As described above, in the “conversion rate registration type computer”, first, an input user registers a conversion rate (such as a tax rate) in a dedicated memory (such as a tax rate memory), and the CPU 63 converts the conversion rate according to the conversion rate. It is to do calculations. In the above examples of “Electronic computer with registered exchange rate” and “Electronic computer with registered exchange rate”, the conversion calculation was performed simply by inputting the numerical value to be converted using the numeric key. , "2500
How much is the price including consumption tax when purchasing 15 items of 0 yen? ], The calculation calculation [25000 (yen) × 15] is performed in the role of a normal calculation.
(Pieces) = 375000 (yen)], and then press the tax-inclusive amount conversion execution key 52, and execute [375000] with the CPU.
(Yen) × 1.05 = 393750 (yen)], firstly, a numerical value to be converted is obtained by a normal operation calculation, and then a conversion calculation is performed.

[0003]

However, in the above prior art, "exclusively for area conversion" or "exclusively for consumption tax-inclusive conversion"
And so on, there is a problem that it is necessary to have a plurality of electronic calculators according to the use, which is troublesome and economically expensive. In the case of a "conversion rate registration type computer", when checking the conversion rate (consumption tax rate, etc.) registered by the input person, the mode switch (tax rate registration key 5
1) and the conversion rate must be displayed on the display screen.

[0004]

In order to solve the above-mentioned problem, the present invention provides a "calculation formula registration type electronic computer" comprising: a computer having a conversion function; A conversion formula memory 16 in which a formula (a formula composed of a combination of an operation symbol and a numerical value) can be registered and rewritten is stored in the RAM 14,
A function of allowing the CPU 13 to perform a conversion calculation in accordance with the conversion formula registered in the conversion formula memory 16 by pressing the execution key 4; and a calculation display screen 1 (a normal display screen of a computer). Separately, a conversion formula display screen 2 for exclusively displaying the conversion formula registered in the conversion formula memory 16 is provided.

[0005]

According to the present invention, various conversion calculations can be performed by registering and rewriting conversion formulas that match the contents to be converted.
Eliminates the need to have multiple computers with conversion functions.
In addition to the calculation display screen 1, there is a conversion formula display screen 2 which constantly displays the conversion formula, so that the user must press the mode switch to confirm the registered conversion rate (conversion formula in the present invention). It saves troublesome work such as.

[0006]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a schematic external view of a “conversion formula registration type computer” of the present invention. 1 is a calculation display screen for displaying a normal calculation or a value to be converted or a conversion result, 2 is a conversion formula display screen for displaying a registered or registered conversion formula, 3 is an operation of the input key 17 ,
And the display screen is "normal calculation" or "registration of conversion formula"
A mode switch to set which of
4 is an execution key for executing the conversion calculation, 5 is a numeric key, 6
Is an operation symbol key, 7 is an equal key, 8 is a clear key for setting the display screen to [0] and clearing the storage in the RAM 14, and 9 is a power supply. FIG. 2 is an internal block diagram showing a schematic system configuration of the present invention. 1 is a calculation display screen, 2 is a conversion formula display screen, 12 is a ROM storing a calculation program and the like, and 13 is a CP for controlling the whole.
U and 14 are RAMs for storing input data, and RAMs
14 includes a calculation memory 15 for storing numerical values for calculation and the like, and a conversion formula memory 1 for exclusively storing conversion formulas.
There are six. Numeral 11 denotes an LCV drive circuit for driving and controlling the calculation display screen 1 and the conversion formula display screen 2, and 17 denotes a numeric keypad.
And input keys such as an operation symbol key 5. FIG. 3 is a flowchart showing a schematic processing program according to the present invention. In the following description of the embodiment, the position of the processing stage will be described along with the progress of the tilt of the operating hand. FIGS. 4 to 7 are operation explanatory diagrams showing the states of the pressed keys and the display screen at that time when the conversion formulas including the operation symbols (×, ÷, +, −) are used. First, as a first embodiment, the conversion calculation of “when a conversion formula including an operation symbol (×) of multiplication (multiplication) is used” is performed. The conversion calculation is "How many dollars is $ 150? (1 dollar = 135 yen)]. The embodiment will be described with reference to FIG. First, the power supply 9 is turned on and activated. Then, in order to register the conversion formula [× 135 (yen)] corresponding to the content to be converted in the conversion formula memory 16, the mode switch 3 is set to [Register] and the operation of the input key 17 is performed. 16 and the converted mathematical expression display screen 2.
FIG. 4A shows a state of the display screen and the like at this time. (Steps S1 and T1 in Flowchart FIG. 3) Next, select [x] from the operation symbol keys 6 and press it, then press [135] with the numeric key 5 to get [x135 (yen)] Is registered in the conversion formula memory 16. FIG. 4A shows a state of the display screen and the like at this time. (T1, T2, T3, T4, T in the flowchart of FIG. 3)
After the registration of the conversion formula [× 135 (yen)] is completed, the mode switch 4 is switched to “calculation”, and the operation of the input key 17 is performed on the calculation memory 15 and the calculation display both sides 1. Make it communicate. Even if the mode switch 4 is switched, the conversion formula [× 135 (yen)] does not disappear and remains displayed on the conversion formula display screen 2. FIG. 4C shows the state of the display screen at this time.
It is. (Steps S1 and K1 in the flowchart of FIG. 3) Then, the numerical value to be converted [150 (dollar)] is depressed with the numeral key 6 and input to the calculation memory 15. The numerical value is displayed on the calculation display screen 1. FIG. 4D shows a state of the display screen and the like at this time.
(Step K3 in the flowchart in FIG. 3) Then, the execution key 4 is depressed, and the CPU 13 calculates the conversion [150 (dollar) × 135 (yen) in accordance with the conversion formula [× 135 (yen)] registered in the conversion formula memory 16. ) = 20250 (yen)]
Is performed, and the conversion result [20250 (yen)] is displayed on the calculation display screen 1. FIG. 4E shows a state of the display screen and the like at this time. (Steps K12, K13, and K14 in the flowchart of FIG. 3) By the way, in the above embodiment, "What is $ 150? ], A simple conversion calculation, but how much is the price if you buy 15 items for $ 150? ($ 1 =
When the mode switch 4 is set to [calculation], the calculation calculation [150
(Dollar) × 15 (pieces) = 2250 (dollar)], find the number of seedlings [2250 (dollar)] to be converted, press the execution key 4, and execute [2250 (dollar) × 135] with the CPU.
(Yen) = 303750 (yen)] to obtain the conversion result [303750 (yen)]. (Steps K4, K5, K6 in Flowchart FIG. 3) As a second embodiment, a conversion calculation of "when a conversion formula including an operation symbol (を) for division (division) is used" is performed. The conversion calculation is, "8250m ² is, what square meters. (1 tsubo = 3.3m
² )]. The embodiment will be described with reference to FIG. In this case, after the foreign currency rate conversion of the above embodiment is performed, the conversion is performed on the basis of the tsubo. The conversion formula display screen 2 displays [× 135 (yen)] and the calculation display screen 1 The operation procedure from the state where the display of [20250 (yen)] remains will be described. First,
The mode switch 3 is used to register the conversion formula [］ 3.3 (m ² )] for conversion into tsubo in the conversion formula memory 16.
To [Registration] so that the operation of the input key 17 is transmitted to the conversion formula memory 16 and the conversion formula display screen 2. Then, the clear key 8 is pressed. Then, the conversion formula display screen 2 displays [0], the conversion formula memory 16 clears the storage, and enters a state of waiting for input. Note that [20250] is still displayed on the calculation display screen 1.
(Yen)] remains displayed. FIG. 5 (f) shows the state of the display screen and the like at this time. (Steps T8, T9, and T1 in the flowchart of FIG. 3) Next, the operation symbol key 6 indicates [記号], and the numeral key 5 indicates [3.3].
(M ^2] and pressed, and registers the converted formula in terms of equation memory 16 [÷ 3.3 (m 2) ]. Diagram showing a state of the display screen or the like at this time, in the FIG. 5 (g) (T2, T3, T4, T5, T6 in the flowchart of FIG. 3)
Next, the mode switch 3 is switched to the "calculation" direction so that the operation of the input key 17 is transmitted to the calculation memory 15 and the calculation display screen 1. Then, the clear key 8 is pressed. Then, the calculation display screen 1 is
[0] is displayed, the calculation memory 15 clears the storage, and enters a state of waiting for input. In addition, the conversion formula [$ 3.3
(M ² )] is still displayed on the conversion formula display screen 2. FIG. 5 shows the state of the display screen and the like at this time.
It is (h). (Steps S1, K1, K2, and K10 in the flowchart in FIG. 3) Then, the numerical value to be converted [8250 (m ² )] is depressed with the numeral key 6 and input to the calculation memory 15. The numerical value is displayed on the calculation display screen 1. FIG. 5G shows the state of the display screen and the like at this time. (Step K30 in FIG. 3 of the flowchart) Then, the execution key 4 is depressed, and the conversion calculation [8250 (m ² )} is performed in accordance with the conversion formula [{3.3 (m ² )] registered in the conversion formula memory 16 by the CPU 13. 3.3 (m ² ) = 2500
(Tsubo)], and the conversion result “2500 (tsubo)” is displayed on the calculation display screen 1. The state of the display screen and the like at this time is (k) in FIG. (Steps K12, K13 and K14 in the flowchart in FIG. 3) Next, the third and fourth embodiments will be described. However, detailed description of the internal system and steps in the flowchart are omitted because they are almost the same as those in the previous embodiment. As a third embodiment, a conversion calculation of “when a conversion formula including an addition (addition) operation symbol (+) is used” is performed as a third embodiment. The conversion calculation is "Basic salary 196000
How much is the total salary when working overtime for 53 hours at an hourly overtime pay of 1050 yen (yen)? ] Is a salary conversion. First, the mode switch 3 is switched to [Registration], and the input key 17 is used to convert the basic formula into the conversion formula [+196000].
(Yen)]. FIG. 6C illustrates the state of the display screen and the like at this time. Next, the mode switch 3 is switched to [calculation]. FIG. 6C shows a state of the display screen and the like at this time. And
Total overtime wage calculation [1050 (yen) x 53 (hours) = 5
5650 (yen)] and the value to be converted [55650
(Yen)]. FIG. 6 (S) shows the state of the display screen and the like at this time. Next, the execution key 3 is depressed and the CPU 13 [55650 (yen) +196000]
(Yen) = 251650 (yen)]
The conversion result [251650 (yen)] is displayed on the calculation display screen 1. A diagram showing the state of the display screen etc. at this time,
It is (se) of FIG. As a fourth embodiment, "when a conversion formula including an operation symbol (-) of subtraction (subtraction) is used"
Is calculated. The conversion calculation is as follows: "The detected concentration is 2.38 pp against the legal standard concentration of pollutant of 1.25 ppm.
When m, what is the reference over concentration? ] Is a standard over concentration conversion. First, the mode switch 3 is switched to “registration”, and the conversion formula [−1.25 (ppm)], which is the legal reference concentration, is registered using the input key 17.
FIG. 7T illustrates a state of the display screen and the like at this time. Next, the mode switch 3 is switched to [calculation]. FIG. 7H shows a state of the display screen and the like at this time. Then, a numerical value [2.38 (ppm)] to be converted, which is a detected concentration, is input. FIG. 7 shows the state of the display screen and the like at this time. Next, the execution key 3 is pressed, and the CPU 13 selects [2.3
8 (ppm)-1.25 (ppm) = 1.13 (pp
m)] and the conversion result [1.13 (pp
m)] is displayed on the calculation display screen 1. FIG. 7T shows a state of the display screen and the like at this time. In the above description, the entered numerical value is described in [], for example, [150 (dollar)], etc.
The unit part (eg, (dollar)) is for easy understanding in description, and is not actually input or displayed. In the above description and the drawings, the names, types, shapes, and the like of the input keys and the like are schematic, and can be changed to more practical ones.

[0007]

As described above, according to the present invention, in a computer with a conversion function, it is possible to register and rewrite a conversion formula (a formula consisting of a combination of an operation symbol and a number plant) suitable for the content to be converted. Since the conversion can be performed, various types of conversion calculations can be performed, and it is not necessary to have a plurality of electronic computers with conversion functions according to the purpose. or,
Since there is a conversion formula display screen 2 separately from the calculation display screen 1, a conversion rate (conversion formula in the present invention) is always used.
However, since it is possible to confirm, there is also an advantage that troublesome operation such as switching of a mode switch or the like is not required.

[Brief description of the drawings]

FIG. 1 is a schematic external view of the present invention.

FIG. 2 is an internal block diagram showing a schematic system configuration of the present invention.

FIG. 3 is a flowchart showing a schematic processing program of the present invention.

FIG. 4 is an operation explanatory diagram showing a state of a display screen or the like in the case of using a conversion formula including a multiplication operation symbol (×) in the embodiment of the present invention.

FIG. 5 is an operation explanatory diagram showing a state of a display screen and the like in a case where “a conversion formula including a division operation symbol (÷) is used” in the embodiment of the present invention.

FIG. 6 is an operation explanatory diagram showing a state of a display screen and the like in a case where “a conversion formula including an addition operation symbol (+) is used” in the embodiment of the present invention.

FIG. 7 is an operation explanatory diagram showing a state of a display screen and the like when “a conversion formula including a subtraction operation symbol (−) is used” in the embodiment of the present invention.

FIG. 8 is a schematic external view of a “computer with a registered exchange rate” as a conventional technique.

FIG. 9 is a schematic internal block diagram of a “computer with a registered exchange rate”, which is a conventional technique.

FIG. 10 is an operation explanatory diagram showing a state of a display screen and the like in a reference example of “a computer in which a conversion rate is registered” which is a conventional technique.

FIG. 11 is a schematic external view of a “conversion rate registration type computer” as a conventional technique.

FIG. 12 is a schematic internal block diagram of a “conversion rate registration type computer” as a conventional technique.

FIG. 13 Reference of “conversion rate registration type computer” which is a conventional technique

[Explanation of symbols]

1. Display screen for calculation 2. Conversion formula display screen 3.
Mode switch 4. Execution key 5. Numeric key 6. Operation key
7. Equal key 8. Clear key 9. Power supply 11. LCD drive circuit 12. ROM13. CPU 14. RAM 15. Calculation memory 16. Conversion formula memory 17. Input key 30. Display screen 31. Convert key 32. Conversion unit key and numeric key 33. Operation key key 34. Equal key 35. Clear key 36. Power supply 41. LCD drive circuit 42. ROM 43. Area unit conversion function CPU 45. R
AM 46. Input key 50. Display screen 51. Tax rate registration key 52. Tax included amount conversion execution key 53. Numeric key 54. Operation key 55. Equal key 56. Clear key 57. Power supply 61. LCD drive circuit 62. ROM 63. CPU 64. RAM 6
5. Tax rate memory 66. Input key

Claims (2)

[Claims] 1. An electronic calculator with a conversion function, in which an input user can register, via an input key 17, a conversion expression (an expression composed of a combination of an operation symbol and a numerical value) which matches the contents to be converted, and can rewrite the conversion expression. 16 is provided in the RAM 14, and when the execution key 4 is depressed, the CPU 13 can perform a conversion calculation in accordance with the conversion formula registered in the conversion formula memory 16, wherein the conversion formula is registered. Electronic computer. 2. In a computer with a conversion function, a conversion formula display for exclusively displaying the conversion formula registered in the conversion formula memory 16 separately from the calculation display screen 1 (normal display screen of the computer). 2. The conversion formula registration type computer according to claim 1, further comprising a screen 2.