JP3063130U - 2 line display calculator - Google Patents

Abstract

(57) [Problem] To provide a calculator that displays two screens in which calculation can be performed while looking at the previous numerical value without performing a troublesome operation in order to view the previously stored numerical value in the arithmetic operation of the calculator. To supply. SOLUTION: A power on / clear key 1, an all clear key 2, a numerical key / decimal key 3, an arithmetic key / e call key 4, a percentage key 5, and an internal button battery are provided on the surface of a calculator body. In a calculator provided with a solar battery 30 for a two-power-supply system, a main display 2 for displaying a numerical value input from a number key / decimal key 3
1. When the plus memory shift key 6 is pressed, the numerical value displayed on the main display 21 is shifted and the memory display 22 for displaying the numerical value, and two screens of the main display 21 and the memory display 22 are arranged in parallel. And input from various shift keys
A two-line display calculator is constituted by simultaneously or alternately displaying two screen displays.

Description

[Detailed description of the invention]

[0001]

[Industrial applications]

 The present invention relates to a calculator that displays two calculation results simultaneously.

[0002]

[Prior art]

 2. Description of the Related Art Conventionally, there have been known calculators in which various keys such as numeric keys and four arithmetic operation keys, and a liquid crystal panel and the like for displaying calculation results are arranged on the surface of a calculator body. Then, the numerical value input by the key operation is calculated and executed, and displayed on the liquid crystal panel. Execute the next calculation and read the result while looking at the previous calculation result. From the calculation results, there was no calculator that could read the previous numerical value easily without any manipulation.

When it is desired to confirm the previous numerical value, it is very troublesome to perform a memory key operation or to perform a calculation again. A calculator for displaying a stored memory value on a memory-dedicated display is disclosed in Japanese Utility Model Laid-Open No. 5-79656. The calculator has a dedicated display for memory. The memory-only display is at the bottom and the calculation display is at the top. It is disclosed that the calculated value is displayed in the lower row when the calculation is started.

[0004] Although the calculation display is in the upper stage, when the calculation is started, the calculated value is displayed in the lower stage, and it is unknown that the calculation value is not input to the calculation display. In the process of performing an operation, it is common to calculate the previously calculated answer and the next calculated answer. If you can do the next calculation while looking at the previous answer to get an accurate answer, there is nothing more reassuring for the person who does the calculation. While looking at the previous answer, I needed a calculator that could see two screens that could do the next operation.

[0005]

[Problems to be solved by the invention]

 The calculator has a memory key, so if you use it, the calculation will be much easier, but even if you want to use the memory function uneasy, you can't see it without operating it. If you forget how to operate it, you can't see it. The only way to confirm this was to perform the complicated calculations again from the beginning. While recording the answer on the paper, he repeated the troublesome checking work to advance the calculation. .

[0006] In view of the above-mentioned conventional drawbacks, the present invention displays two screens in which calculations can be performed while looking at the numerical values of the previous image without performing troublesome operations in order to see the previous numerical values. It aims to provide a calculator.

[0007]

[Means for Solving the Problems]

 In order to achieve the above object, the invention according to claim 1 is characterized in that a power-on / clear key, an all-clear key, a numeric key / decimal key, a four-function calculation key, an e-call key, and a percent key And a two-source solar battery with an internal button battery and a main display that displays the values entered using the numeric keys and decimal keys, and a plus memory shift key that displays on the main display The memory display that shifts the displayed numerical value and displays the numerical value, the main display, and the memory display are arranged in parallel, and the two screens are displayed simultaneously or alternately by input from various shift keys. The two-line display with the configuration shown on the display and the value displayed on the main display when pressed, are stored in memory Press the plus memory shift key to shift to the display, press the minus memory shift key to change the value displayed on the main display from positive to negative or from negative to positive, and press twice to clear the value displayed on the memory display The memory clear key to shift the numerical value displayed on the memory display to the main display when pressed, and the shift key to display the numerical value displayed on the main display on the main display before the shift when pressed twice. The two-line display calculator, which displays two calculation results at the same time by arranging it on the surface of the computer.

[0008]

[Embodiment of the invention]

 Hereinafter, the present invention will be described in detail based on an embodiment shown in the drawings.

FIG. 1 is a front view of a two-line display calculator according to the present invention. Reference numeral 1 denotes a power-on key, a clear key, and a number correction key (hereinafter, referred to as ON / C and CE keys). The ON / C and CE keys 1 are used to start calculations, to clear data other than memory, and to correct mistakes in numeric key presses. Reference numeral 2 denotes an all-key (hereinafter referred to as an AC key). AC key 2 clears all values in the main display and the memory display. Reference numeral 3 denotes a numeric key and a decimal key. Use the numeric keys and three decimal keys to enter numbers into the calculator using these keys. Reference numeral 4 denotes an arithmetic operation key / equal key. The four arithmetic operation keys and the equal key 4 are the addition, subtraction, multiplication, and equal keys. 5 is a percent key.

Reference numeral 20 denotes a two-line display. The two-line display is a liquid crystal display in which a main display and a memory display are arranged so that the two screens can be displayed in parallel. 21 is a main display. The main display 21 displays the numbers input from the numerical keys and the three decimal keys. 22 is a memory display. The memory display 22 shifts the number displayed on the main display 21 to the memory display 22 by pressing the number displayed on the main display 21 plus the memory shift key. The two-line display 20 can perform complicated calculations using the memory shift key while looking at the display.

Reference numeral 6 denotes a plus memory shift key (hereinafter, referred to as an M + key). When the M + key 6 is pressed, the numerical value displayed on the main display 21 is shifted to the memory display 22. Reference numeral 7 denotes a minus memory shift key (hereinafter, referred to as an M-key). Pressing the M-key 7 changes the numerical value displayed on the main display 21 from positive to negative or from negative to positive, and shifts to the memory display 22. Reference numeral 8 denotes a memory clear key (hereinafter, referred to as an M / RC key). Pressing the M / RC key twice clears the value displayed on the memory display 22. 9 is a shift key. When the shift key 9 is pressed, the numerical value displayed on the memory display 22 is shifted to the main display 21. When the shift key 9 is pressed twice, the value displayed on the main display 21 before the shift is displayed again.

FIG. 2 (a, b, c, d, e, f) is a diagram for explaining a method of operating the two-line display calculator according to the present invention. FIG. 2 (a) shows a case where a numeral 12345678 is input using a numeral key / three-decimal key, and 12'345'678. And display numbers. FIG. 2B shows that when the M + key 6 is pressed, 12'345'678. Displayed on the main display 21 is displayed. Is indicated on the memory display 22 disposed at the upper side as 12'345'678. Is shifted. 7. The numerical value of the main display 21 arranged below is 12'345'67. It is. FIG. 2C shows that when the ON / C, CE key 1 is pressed, the numerical value 12'345'678. Displayed on the main display 21 is displayed. Is cleared, so no value remains on the screen.

FIG. 2D shows that, when the shift key 9 is pressed, the numerical values 12'345'678. Shifts to the main display 21, so the values on both screens are 12'345'678. It is. FIG. 2E shows that when the M / RC key 8 is pressed twice, the numerical values 12'345'678. Displayed on the memory display 22 are displayed. Is shifted to the main display 21, so that the numerical display of the main display 21 is 12'345'678. Becomes FIG. 2F shows that when the M-key 7 is pressed, the numerical values 12'345'678. Displayed on the main display 21 are displayed. Is set to minus (-) to shift to the memory display 22. 7. The numerical display of the memory display 22 is -12'345'67. It is.

FIG. 3 (a, b, c, d, e, f, g, h, i, j) is a diagram for explaining a calculation example of the two-line display calculator according to the present invention. The same components as those of the embodiment of the present invention are denoted by the same reference numerals, and redundant description will be omitted. Example) Two calculation results of 10 + 20 + 50 = 80 and 60 + 10 + 50 = 120 are totaled. In FIG. 3A, at the beginning of the calculation, the user presses the AC key 2 to clear all the numerical values displayed on the main display 21 and the memory display 22, and then inputs "10". 10 is displayed on the main display 21. In FIG. 3B, +20 is input. 20 is displayed on the main display 21. In FIG. 3C, +50 is input. 50 is displayed on the main display 21. In FIG. 3D, an equal key is pressed to add up. 80 is displayed on the main display 21.

FIG. 3 (e) shows that, in order to perform the next calculation, the M + key 6 is pressed to shift the total 80, which is the previous calculation, to the memory display 22. The main display 21 and the memory display 22 are both displayed as 80. Hold down the ON / C, CE key 1 and enter 60. 60 is displayed on the main display 21 and 80 is displayed on the memory display 22. In FIG. 3G, +10 is input. 80 is displayed on the memory display 22 and 10 is displayed on the main display 21. In FIG. 3H, +50 is input. 50 is displayed on the main display 21 and 80 is displayed on the memory display 22. In FIG. 3 (i), an equal key is pressed to add up. 120 is displayed on the main display 21.

In FIG. 3 (j), when the M + key 6 is pressed in order to add the total 80 before and the total 120 after, the total 200 is displayed on the memory display 22. The main display 21 displays the numerical value 120 before calculation. As described above, while viewing the display of the previous total value, the subsequent total value can be calculated.

FIG. 4 (K, L, M, N, O, P, Q) is a diagram for explaining a calculation example for correcting the total number of the two-line display calculator according to the present invention. In the example, the numerical value obtained as 90 + 80 + 70 = 240 is sequentially corrected. In FIG. 4K, since 90 + 80 + 70 = 240, the key operation is to press the AC key 2 first. The keys are sequentially pressed to obtain 240. 240 is displayed on the main display 21.

FIG. 4L shows that the numerical value 240 of the main display 21 is shifted to the memory display 22 by pressing the M + key 6 in order to correct the numerical value sequentially. The numerical display of both the memory display 22 and the main display 21 is 240. In FIG. 4 (M, N), the ON / C, CE key 1 is pressed to clear the numerical display 240 of the main display 21. The shift key is pressed to shift the numerical value 240 from the memory display 22 to the cleared main display 21. The numerical display of both the memory display 22 and the main display 21 is 240.

In FIG. 4 (O), when the corrected numerical value is −2, the numerical display of the main display 21 is 240, and when −2 = is input, the numerical display of the main display 21 becomes 238. . The numerical display of the memory display 22 is 240. In FIG. 4 (P), when 238 × 1.05 = 249.9, the numerical display of the main display 22 is 238. Therefore, when × 1.05 = is input, the numerical display of the main display 21 is 249. .9. The numerical display of the memory display 22 is 240. In FIG. 4 (Q), when 249.9 ÷ 1.2 = 208.25, the numerical display of the main display 21 is 249.9. The numerical display is 208.25. The numerical display of the memory display 22 is 240.

Reference numeral 30 denotes a solar battery. The frost source is a two-power system (dual power system) of the solar battery 30 and the internal button battery.

[0021]

[Effect of the invention]

 As is clear from the above description, the present invention has the following effects.

(1) The invention according to claim 1 is that, on the surface of the calculator body, a power-on / clear key, a numeric key / decimal key, an arithmetic key / e-call key, a percent key, an internal button battery and In the calculator equipped with the two-power-source solar battery described above, the main display for displaying numerical values input from the number keys and the decimal key, and the value displayed on the main display are shifted by pressing the plus memory shift key. Two screens, a memory display that displays numerical values, a main display, and a memory display, are arranged in parallel, and the two screens are displayed simultaneously or alternately by input from various shift keys. Shifts the two-line display and the value displayed on the main display to the memory display when pressed. A plus memory shift key, a minus memory shift key that changes the value displayed on the main display from positive to negative or from negative to positive when pressed, and a memory clear key that is pressed twice to clear the value displayed on the memory display And a shift key that, when pressed, shifts the value displayed on the memory display to the main display, and when pressed twice, redisplays the value displayed on the main display before shifting, on the original surface of the calculator. Since the two-line display calculator that displays two calculation results at the same time was configured, it was possible to perform complicated calculations while viewing two screens.

(2) According to the above (1), when the plus memory shift key is pressed in order to add the previous total value and the subsequent total value, the total is displayed on the memory display. The main display shows the numerical values before calculation. While looking at the total number before, the total number afterwards can be calculated with confidence.

(3) According to the above (1), when a type of shift key is pressed, any one of the two screens is changed. Therefore, it is possible to determine whether the key was pressed by mistake or forgot to press it. No more having to do. This is a very convenient two-line display calculator that allows you to correct any mistakes.

[Brief description of the drawings]

FIG. 1 is a front view of a two-line display calculator according to the present invention.

FIG. 2 is a diagram for explaining an operation method of the two-line display calculator according to the present invention.

FIG. 3 is a diagram for explaining a calculation example of the two-line display calculator according to the present invention.

FIG. 4 is a diagram for explaining a calculation example for correcting the total number of the two-line display calculator according to the present invention.

[Explanation of symbols]

 Reference Signs List 1 power on / clear key 2 all clear key 3 numeric key / decimal key 4 arithmetic key / e call key 5 percent key 6 plus memory shift key 7 minus memory shift key 8 memory krua key 9 shift key 20 2 line display 21 main display 22 Memory display 30 Solar battery 50 2-line display calculator

Claims (1)

[Utility model registration claims] 1. A power-on / clear key (1), an all-clear key (2), a numeric key / decimal key (3), an arithmetic key / e-call key (4) are provided on the surface of the calculator body. A main display (21) for displaying a numerical value input from a numeric key / decimal key (3) in a calculator provided with a percent key (5) and a solar battery (30) for a dual power supply system including an internal button battery. When a plus memory shift key (6) is pressed, a numerical value displayed on the main display (21) is shifted and the numerical value is displayed, a main display (21), and a memory display (22). A two-line display in which two screens are arranged in parallel, and the two screens are displayed simultaneously or alternately by inputting from various types of shift keys. -(20), when pressed, shifts the value displayed on the main display (21) to the memory display (22), plus the memory shift key (6); when pressed, the value displayed on the main display (21) changes from positive to negative Or press the minus memory shift key (7) to change from negative to positive, press twice to clear the numerical value displayed on the memory display (22), and press the memory clear key (8) to display the value on the memory display (22) A shift key (9) for shifting the numerical value being displayed to the main display (21) and pressing the key twice to redisplay the numerical value displayed on the main display (21) before shifting is arranged on the surface of the calculator main body. 2. A two-line display calculator.