CN2463869Y

CN2463869Y - Abacus type electronic calculator

Info

Publication number: CN2463869Y
Application number: CN 01210572
Authority: CN
Inventors: 党晓峰; 韩雁
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-02-15
Filing date: 2001-02-15
Publication date: 2001-12-05
Anticipated expiration: 2011-02-15

Abstract

A abacus type electronic calculator is composed of 5 horizontal keys, 1 key, 2 key, 3 key and 4 key, numeral keys arranged in abacus type, function keys, display device, key circuit, IC, auxiliary circuit, solar cell and casing. The calculator is small in width, the position area and the size of the shell are correspondingly reduced, the calculator is favorable for placement and attractive, meanwhile, the calculator is convenient to operate, is not easy to make mistakes, and is low in cost.

Description

The abacus type electronic calculator

The utility model relates to a kind of calculation element.

Financial and accountancy personnel and be engaged in the computational tool that the personnel relevant with digital computation use at present and mainly contain abacus, counter, computing machine etc.And Chinese patent CN95101068.9 discloses a kind of " not needing the pocket caculator abacus of plus and minus calculation keys ", it is by housing, pilot lamp, the function key that comprises "+", "-", " * ", " ÷ ", "=", deletion, display device indicates the crossbeam of words such as " individual 10,010,000,000 ", radix point, five horizontally-arranged numerical keys, integrated circuit and auxiliary circuit constitute." 5 " key of five horizontally-arranged numerical keys is above crossbeam, and " 1 " key, " 2 " key, " 3 " key, " 4 " key come the crossbeam below successively.Pilot lamp, function key, display device, numerical key all are connected with integrated circuit.There is following weak point in this pocket caculator abacus: because crossbeam is arranged, again function key and in addition upright two horizontally-arrangeds of pilot lamp are come the numerical key top, so width is bigger up and down, position area and volume are bigger, are unfavorable for placing; Function key is arranged in the display device front, and inconvenient operation is made mistakes easily; When its gear reached ten grades of left and right sides, all corresponding prolongation that occupies of function key, pilot lamp, crossbeam can increase unnecessary cost.

The purpose of this utility model provides that a kind of width reduces, cost reduces, easy to operate abacus type electronic calculator.

The purpose of this utility model is finished by following proposal: by housing, be arranged in "+" number key above the housing, "-" number key, " * " number key, " ÷ " number key, "=" number key, delete key, function key and five horizontally-arrangeds that on ﹠ off switch is formed are " 5 " key successively, " 1 " key, " 2 " key, " 3 " key, the numerical key that " 4 " key is formed, place integrated circuit and auxiliary circuit in the housing, display device, solar cell constitutes, function key, numerical key is connected with integrated circuit by key circuit, display device also is connected with integrated circuit, characteristics are: function key is arranged in the left side of five horizontally-arranged numerical keys or/and the right, display device and solar cell be arranged in the housing front and with housing between become hinge type to link to each other.

Described numerical key is made up of integer number key and fractional digit key.Described integer number key is that the numerical key by 5～11 grades on the left side constitutes, and indicates " individual " key, " thousand " key, " million " key that integer is located on " 1 " key of a position shelves of integer location, kilobit shelves, megabit shelves.Described fractional digit key is that 1～4 grade numerical key by the right constitutes, and indicates with the integer shelves on decimal shelves " 1 " key by an integer position shelves and distinguishes " decimal " key of representing decimal place.The buzzing key of sounding when in button, being provided with operation that integrated circuit is connected.

The utility model has been owing to removed crossbeam and pilot lamp, and function key is arranged in the left side of five horizontally-arranged numerical keys or/and the right under identical situation, diminishes its width, makes position area and smaller volume accordingly, helps placing, and is also attractive in appearance; Simultaneously easy to operate, be difficult for makeing mistakes; Cost also descends.

Below in conjunction with accompanying drawing the utility model is elaborated.

Fig. 1 is a kind of surface structure synoptic diagram of the present utility model;

Fig. 2 is a kind of circuit theory diagrams of the present utility model.

With reference to Fig. 1, Fig. 2, at abacus type electronic calculator housing 1 upper surface from top to bottom, arrange 5 horizontally-arranged numerical keys, as the arrangement of abacus bead: the 1st horizontally-arranged is that " 5 " key, the 2nd horizontally-arranged to the 5 horizontally-arrangeds are " 1 " key, " 2 " key, " 3 " key, " 4 " key successively, be divided into 11 grades, promptly perpendicular row or column.Numerical key is divided into integer number key 11 and fractional digit key 10.Integer number key 11 is 9 grades, in these 9 grades of integer number keys 11, carry out the integer location from right to left, on its " 1 " key of position shelves, kilobit shelves, megabit shelves, indicate " individual " word, " thousand " word, " million " word that integer is located respectively, make these 3 " 1 " keys become " 1 " key, " 1,000 " key, " 1,000,000 " key, input during integer number just with the corresponding input of integer positioning, all 0 are all imported.Fractional digit key 10 is 2 grades, promptly indicate " decimal " word of distinguishing expression decimal tenths with integer number key 11 on " 1 " key by integer shelves the right, position at decimal tenths shelves, make this key become " decimal 1 " key, carry out the location of decimal shelves, when the input fractional digit, just locate corresponding input, 0 also input with the decimal shelves."+" number key 6, "-" number key 7, delete key 8, "=" number key 9 are arranged in the right at housing 1 upper surface numerical key, arrange " * " number key 5, " ÷ " number key 4, buzzing key 3, on ﹠ off switch 2 on the left side of numerical key.Arrange display device LCD and solar cell VCC in the top of housing 1, make that the one-tenth hinge type is connected between display device LCD and solar cell VCC and the housing 1.Circuit in housing 1 has key circuit, integrated circuit U1 and auxiliary circuit.Key circuit is made up of contact J1～J65, is used for function key, numerical key and is connected with contact between the integrated circuit U1, and determined the location of each gear numerical key by integrated circuit U1.The model of integrated circuit U1 is AT89C51.Auxiliary circuit is to be that the crystal oscillator X2 of 6MHz connects and composes by resistance R 1～R11, capacitor C 1～C3 and frequency.Display device LCD is liquid crystal display, and is connected with integrated circuit U1, as shown in Figure 2.

Method of operating: input digit is when (comprising decimal), locate input more earlier, input the 1,2,3,4, the 5th, directly by corresponding key, 6 by 2 itself and be 6 key, 7,8,9 analogize with 6 input methods.The input of long number (comprising decimal) will be located input more earlier, meets 0 this position not import.Abacus type electronic calculator one is opened, and promptly is in the addition state, connects the each operation by "+" key, "=" key of added-time omission, directly shows each accumulation result behind the input addend; Subtraction, input minuend is pressed "-" key more earlier, even it is in the subtraction state, omission by the operation of "-" key, "=" key, directly shows poor result at every turn at every turn when even subtracting behind the input subtrahend; Multiplication and division makes it be in the addition state earlier, and (removing) number is taken advantage of in input, makes it be in (removing) state of taking advantage of again, and (removing) number is taken advantage of in input, by "=" number key, demonstrates operation result at last.

Claims

1, a kind of abacus type electronic calculator, by housing [1], the function key and five horizontally-arrangeds that are arranged in top "+" number key [6] of housing [1], "-" number key [7], " * " number key [5], " ÷ " number key [4], "=" number key [9], delete key [8], on ﹠ off switch [2] composition are the numerical key of " 5 " key, " 1 " key, " 2 " key, " 3 " key, " 4 " key composition successively, place key circuit, integrated circuit [U1] and auxiliary circuit in the housing [1], display device [LCD] constitutes; Function key, numerical key are connected with integrated circuit [U1] by key circuit, display device [LCD] is connected with integrated circuit [U1], it is characterized in that: function key is arranged in the left side of numerical key or/and the right, and display device [LCD] and solar cell [VCC] are arranged in housing [1] front and coupled.

2, abacus type electronic calculator according to claim 1 is characterized in that: described numerical key is made up of integer number key [11] and fractional digit key [10].

3, abacus type electronic calculator according to claim 2, it is characterized in that: described integer number key [11] is that the numerical key by 5～11 grades on the left side constitutes, and indicates " individual " key, " thousand " key, " million " key that integer is located on " 1 " key of a position shelves of integer location, kilobit shelves, megabit shelves.

4, abacus type electronic calculator according to claim 2, it is characterized in that: described fractional digit key [10] is that the numerical key by 1～4 grade on the right constitutes, and indicates with integer number key [11] on decimal " 1 " key by an integer position shelves and distinguishes " decimal " key of representing decimal place.

5, according to claim 1 or 2 or 3 or 4 described abacus type electronic calculators, it is characterized in that: the buzzing key [3] of sounding when in button, being provided with operation that integrated circuit is connected.