JPS5853767B2 - Abacus-style desktop electronic calculator - Google Patents

Description

[Detailed description of the invention] This invention relates to an improvement in an electronic desktop calculator.

Electronic desktop calculators, also known as electronic calculators, were revolutionary in that they were able to automatically process calculations using an electronic circuit built into the device, instead of the conventional mechanical calculation method used by desktop calculators. Ta.

Also, when compared to the abacus, there is no need to carry up or down the beads, and in particular, the mental arithmetic elements of multiplication and division, as well as slightly more complicated bead operations, can be performed using electronic circuits and simple key operations. It has brought many conveniences.

However, when compared with the abacus, the following drawbacks cannot be pointed out.

That is, (1) Calculator treats numerical values as a mere list of numbers, so the relationship between numbers and places is ignored, leading to simple mistakes.

This abacus does not cause such mistakes because numbers are always treated with the concept of place.

(2) Calculator requires display operation of O in the numerical value using keys, but abacus does not require this.

In other words, for example, the numerical value 100,000 will be displayed directly by inserting 1 in the 6th digit.

(3) The most frequent calculation during calculation is addition calculation,
In the case of a calculator, it is necessary to operate the + key for each calculated value.

In the case of an abacus, this operation is not required.

(4) The abacus is basically held by the left end (kami) with the left hand, and can be moved while operating the bead with the right hand. However, in the case of a calculator, it is basically held in the right hand position. It is necessary to operate the keys while reading the numerical value, and the distance between the numerical value and the key is relatively large, and the probability of miscalculation is correspondingly high.

The present invention aims to add the useful functions and effects of the above-mentioned abacus to the basic functions of a calculator. A display section that displays the calculated numerical value for each calculation, and a five-bead key and keys 1 to 4 of one method corresponding to the display section, and at least +, -1×, ÷, and -, respectively. This is an abacus-type desk-top electronic calculator that is equipped with keys that have calculation and erasure (C) functions.

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

The main body a of the calculator is formed into an oblong rectangular shape like an abacus, and houses known electronic circuit mechanisms (not shown) for basic control, storage, calculation, input/output, and the like.

On the board surface of main body a, 18 is placed on the part corresponding to the beam of the abacus.
A display section is set up to display the numerical value of each step, and above this is the legislative key C, and below this are the keys d to g of 1st law 1 to 4. They are arranged in a vertical line.

The law key C and the law keys d to g of 1 to 4 basically have the same calculation and operation functions as the abacus.

That is, the legislative key C or the keys 1 to 4 of the beads d to g.
If the key C and keys d to g are operated simultaneously, the total value will be displayed on the display section.

Further, when a numerical value is displayed on the display section using key C or keys d to g, 0 is displayed up to a set reference localization point, which will be described later.

In other words, similar to the abacus, for example, if you use a certain fixed point as a reference and operate the key 4 points higher than this point to enter the number 6,
The display section displays 6 in the digit of the operated key and O in each digit up to the localization point, resulting in a numerical value of 6000 being displayed.

However, unlike the abacus, in which the keys of the present invention move along the edges, the keys are fixed in position, and the operation thereof is the same as that of a normal calculator.

Therefore, all the operations of raising or lowering the abacus are controlled by electronic circuits, and no operation is required for this purpose.

In addition, key C and keys d to g have slopes facing outward from each other on the upper surfaces of the keys, sandwiching the display, so that the keys can be operated at the same time by using fingers similar to those used on the abacus. (See Figure 2).

However, in the case of the present invention, as mentioned above, there is no need to operate the abacus, so the keys are only sloped in the direction in which the beads are inserted, that is, the slopes face outward from each other across the display part. .

In the embodiment, the display section 6 is set between the law key C and the law keys d to g, that is, the beam part of the abacus, but the distance between the key C and the keys d to g can be set as appropriate. Furthermore, the display section 6 may be arranged above the cubic row of keys C, and the slopes provided on the upper surfaces of the keys C and keys d to g may not be provided in some cases.

The display section basically has a reference localization point fixed at the top of the screen, and when calculating, in principle, calculate using this localization point.

However, if the calculated value is 16 or more digits, or less than 3 digits after the decimal point, calculations will not be possible with the above setting of the localization point, so in this case, set the fixed reference localization point as described above. A key C for setting the position, and a key H for setting (changing) the fixed position provided on this side or on the other side.
and h' to determine the reference localization point at that position.

Therefore, after changing and setting the localization point, if you want to return it to the fixed localization point, press the key h' above to return to the original state.

In addition, the key i is used to transfer the calculated value when you want to leave it on the display.If you use this method, by operating the key i, you can transfer the value to 10 digits. The above information will be displayed on the display screen, and calculations will be made using 9 units.

As shown in the figure, the key i is set at the top of the end position on the servant side of the main body a, and at this position, +,
Keys with known computer functions such as -1×, ÷, -1C, etc.
are provided in a predetermined arrangement.

Note that the calculator of the present invention remains ON unless key j is operated.
In the current state, it is set to always have an addition function, and therefore, in principle, it is possible to start addition calculations based on a fixed reference localization point.

Next, the numerical display and each calculation procedure will be shown diagrammatically.

Numerical display Subtraction calculation Numerical display is the same Multiplication calculation Numerical display is the same Division calculation Numerical display is the same Numerical display As shown in the diagram, the number 567000 is 6. It is displayed by pressing the 4th key, 7, respectively, and the following O does not require pressing.

Addition calculations can be performed using the methods of ■ and ■.

In the case of ■, first display the numerical value 567000 as described above, then 7th digit 1.6th digit 8.5th digit 3.
You can pass the fourth digit, press the third digit 5, and pass the following two digits.

If you want to add more, do it as described above.

The method (2) differs only in numerical display and key operations, and is otherwise similar to a normal calculator, in other words, the + key is operated for each addition, and the answer is obtained by using the - key.

Subtraction, multiplication, and division are the same as in addition calculation (2).

Other calculations such as % and F are basically the same as with a normal calculator, except for the numerical display and key operations.

In addition, in the above example, 18 digits were taken, but
Of course, if you want to make it more compact, you can reduce the number of digits, or if you want a normal abacus-like shape, you can increase the number of digits. The arrangement of keys h, h', etc. are not limited to the examples.

In this way, the present invention combines the useful functions of the abacus (particularly the functions (1) to (4) above) with the various functions of a calculator to create an extremely novel, high-performance, and excellent product. This has the effect of providing a calculator.

[Brief explanation of drawings]

Fig. 1 is a plan view showing an embodiment of the calculator of the present invention, Fig. 2 is an enlarged left side view, a is the main body, b is the display section, C
is the legislative key, d to g is the key to 1 to 4 of one share, h
and h' are keys for setting (changing) the reference localization point, i is a key for displaying numerical value transition, and j is +, -1×, ÷, -1C, and %.
, 7, etc. is a key for calculation and deletion.

Claims (1)

[Claims] 1. On the board of the oblong and rectangular main body with a built-in electronic circuit, there is a display section that displays the calculated numerical value for each step, and corresponding to the display section, there are five bead keys and keys 1 to 4 of one method. In the desktop electronic calculator, the display section is provided with a key having at least a key having a function of calculating +, -1×, ÷, and =, respectively, and a deletion (C) function, wherein the display section has a fixed or movable reference position. It has the function of displaying calculated numerical values in conjunction with the point setting keys, and the numerical display on the display section displays 0 from the ridge to the reference localization point by operating the key of the ridge in the numerical value. An abacus-type desktop electronic calculator characterized in that 00 in the numerical value is configured with a display function that does not require key operations.