CN2187811Y

CN2187811Y - Multi-function caculator

Info

Publication number: CN2187811Y
Application number: CN 94207909
Authority: CN
Inventors: 田茂生; 王增贤
Original assignee: Beijing Jinxing Pen Making Three Factory
Current assignee: Beijing Jinxing Pen Making Three Factory
Priority date: 1994-04-09
Filing date: 1994-04-09
Publication date: 1995-01-18
Anticipated expiration: 2004-04-09

Abstract

The utility model relates to a multi-function calculator, and the multi-function calculator is composed of a casing, a keyboard, a liquid crystal display, a select switch for operational function, and an operation control circuit. The keyboard is additionally provided with six special keys which are labeled by the Chinese characters for the tax rate setting, the tax amount, the sum of the tax value, the gross proceeds, the clearance of the tax rate, and the checking of the tax rate. A panel is provided with an operation control switch for 'tax calculation'. Except that the multi-function calculator has the general function of the ordinary calculator, the multi-function calculator can also carry out the calculation of multiple relevant new taxations accurately, quickly and easily. A more ideal calculation tool is provided to be fit for the tax reform and help the business finance person to solve the problems such as the calculation of the relevant value-added tax, the make of an invoice, etc.

Description

Multi-function caculator

The utility model relates to a kind of portable electronic digital calculator, exactly, relates to a kind of for adapting to the current taxation reform, for the multi-functional liquid crystal display digit counter of industrial and commercial enterprises' financial accounting use.

Various portable or desk-top electronic digit counters,, easy to use obtain people accurate because of its delicate structure, computing like and glad the use.Now, this have the financial staff of enterprises and institutions moments such as factory, shop, office, bank, school that electronic digit counter that liquid crystal digital shows become all trades and professions not from carry-on instrument.In recent years, be to accelerate the reform step of setting up socialist market economy system, government has released a series of reform actions, and carrying out with the value added tax in enterprise is that the taxation reform of representative is one of them.Owing to present various electronic calculators are to manufacture and design for carrying out conventional addition subtraction multiplication and division arithmetic, the product of the amount of tax to be paid (various tax rate settings also are not quite similar), valency tax often add up commodity or to(for) this needs adds up to, it is very loaded down with trivial details just to seem during the fund of total sales, trouble, also often go wrong easily, brings unnecessary loss to enterprise.

The purpose of this utility model provides a kind ofly can carry out the normal conventional computing, can adapt to the current taxation reform again, for improving business finance personnel work efficiency, solve industrial and commercial enterprises' finance multifunction electronic counter of specific calculation usefulness such as relevant value added tax calculates, draws a bill.

The utility model includes: casing, keyboard, LCDs and arithmetic control circuit is characterized in that: the keyboard on machine shell panel has additional: tax rate setting (M+), valency tax total, total sales (GT), the amount of tax to be paid, the tax rate remove (CM) and the tax rate is verified (RM) six dedicated button; Panel is provided with one makes counter have " taxing " operation-control switch of taxing with automatic accumulation function; The inner arithmetic control circuit that is provided with of casing is to set up thirty system counting/divider integrated circuit and one to include the taxing exclusive data selector switch that special IC the constituted composition that five NPN transistor are made on-off circuit in the periphery of original counter dedicated IC chip LI3364.Above-mentioned thirty system counting/divider integrated circuit is respectively as frequency divider, amount of tax to be paid data selector and valency tax total data selector switch.The chip that can select CMOS CD4017 model for use is as decimal system counting/divider.

Maximum characteristics of the present utility model are except the general utility functions with ordinary electronic digital calculator, owing to set up dedicated button such as above-mentioned tax rate setting, the amount of tax to be paid, valency tax total, total sales, can carry out the computing of the professional aspect of multinomial relevant new tax system accurately, rapidly, easily.For example can after calculating sales volume,, just can calculate the amount of tax to be paid, valency tax total immediately as long as press amount of tax to be paid key, valency tax total key; Also can be decomposed into and do not contain the tax sales volume and the amount of tax to be paid containing the tax sales volume; Particularly when the sale multiple product was drawn a bill, need not add up just to show directly that the total sales and the amount of tax to be paid add up to, the valency tax adds up to; In addition, can also carry out the computing of interest and price differential between wholesale and retail.Computation of tax amount for different tax category such as value added tax, business tax, the consumption taxes is all very convenient, easy.Test examination factually, the common counter of the comparable use of invoice that uses the utility model to open three kinds of products improves tens of times of speed.So the utility model is that vast financial staff of industrial and commercial enterprises and tax worker adapt to the taxation reform, help its a kind of more satisfactory computational tool that solves problems such as value added tax calculates, draws a bill, be the powerful mean of carrying out new tax system.

Another characteristics of the present utility model are that circuit design is ingenious, have made full use of the technical feature of original counter specialized large scale integrated circuit, have only set the peripheral circuit device of minute quantity, have given new vitality and function just for common counter.Circuit structure is simple, reliable operation.And keyboard special directly stamps Chinese character, and is visual and clear, is convenient to operation.

Fig. 1 is a machine shell panel front elevation of the present utility model.

Fig. 2 is the circuit diagram of arithmetic control circuit of the present utility model.

Referring to Fig. 1,1 is casing, the 2nd among the figure, and keyboard, 3 is LCDs of 12 bit digital.Fig. 1 has clearly showed the keyboard of the utility model on its machine shell panel, except various function buttons, tax rate setting (M+), tax rate removing (CM), tax rate verification (RM), valency tax total, the amount of tax to be paid and total sales six dedicated button such as (GT) have also been increased with common counter.The 4th, " taxing " operating function selector switch of setting up on panel 1 when this switch being placed right-hand member " taxing " position, the utlity model has and taxes and automatic accumulation function, and will add up to each result of calculation that obtains by "=" key automatically this moment.When this switch was placed left end, the utility model was common counter, can carry out various calculating commonly used.Have only when functional select switch is chosen in " taxing ", usefulness could take place in six dedicated button of the present utility model, dials when the common counter shelves as this switch, and the function of above-mentioned dedicated button is alphabetical shown in its bracket.For example: tax rate setting (M+) key, when " taxing ",,, can import and be suitable for the tax rate and deposit in the storer by behind this key for the tax rate is provided with key; If when general function, be accumulation key, by behind this key, can in storer, add up numeral or result of calculation, and deposit in the storer.The tax rate is verified (RM) key, when " taxing ", can show the tax rate that exists in the storer by this key; If when general function, for accessing the memory content key.The tax rate is removed (CM) key, and when " taxing ", this key is for depositing tax rate clear key; If when general function, this key is for removing the memory content key.

Fig. 2 is an arithmetic control circuit schematic diagram of the present utility model.The utility model is to set up in the periphery of the special-purpose extensive collector IC5 of the LI3364 counter of Japanese Sharp (SHARP) company to include five NPN transistor by thirty system counting/divider integrated circuit (IC) 1～IC3 and one and make the taxing exclusive data selector switch that the special IC IC4 of on-off circuit constituted and form arithmetic control circuit.As long as select the taxing program just can realize different data selections successively, finish various specific taxing calculation functions.Wherein IC1～IC3 can select the CMOSCD4017 chip for use.

Principle of work of the present utility model is: the 1500Hz square-wave signal by IC5 output is sent into 14 pin of IC1 as clock signal through connector T 3.After IC1 carries out four frequency divisions, obtain the square-wave signal of 345Hz, export 14 pin of delivering to IC2 and IC3 from its pin 4, as its clock.IC2 finishes the selection function of amount of tax to be paid data in circuit, " permission " pin one 3 of " amount of tax to be paid " dedicated array of keys on the keyboard and IC2

Link to each other (low level is effective).Behind the IC2 input clock signal, output timing trigger pip respectively from its pin two, 4,10 and 6 makes three transistor turns in the IC4 respectively according to certain hour, is integrated with the NPN transistor of 5 common emitters in the IC4, as electronic switch.Like this, the

51,42,50 and 72 of IC5 is switched on, realize the data selection of " amount of tax to be paid ", when being allocated to " taxing " at functional switch, after the input data, as long as press once " amount of tax to be paid " key, the utility model just can calculate the amount of tax to be paid of the corresponding tax rate automatically automatically according to the ratio of " tax rate selection ".IC3 is a valency tax total data selector switch, and after above-mentioned clock signal entered its 14 pin, IC3 entered respectively in the two transistor in addition of IC4 just according to the fixing sequential signal of sequential output, and the pin two of IC3,6 enters the B1 utmost point of IC4,42,45 pins of conducting IC5; The

4,5 of IC3 enters the B5 utmost point of IC4, and 41,48 pins of conducting IC5 can be finished the valency tax accumulation function of being imported." valency tax total " dedicated array of keys on the keyboard and " permission " pin one 3 of IC3

Link to each other (low level is effective).

R2 is a resistor chain among Fig. 2, and resistance is 2K.Switch AN is above-mentioned " taxing " operating function switch, during switch opens, is common counter state; When switch closes, be the taxing mode of operation.

When the utility model was chosen in " taxing " operating function, the machine internal storage was that the tax rate is provided with state, and the tax rate of (setting) that storage is imported, as the tax rate foundation of above-mentioned data selector work.

In a word, the utility model can be selected to use as common counter easily, and perhaps as rate, without adjustment, this tax rate can not change voluntarily in the use.Can add up many business automatically and realize that the valency tax adds up to, write VAT invoice special facility is provided for opening.Can check the tax rate at any time in the computing, guarantee to calculate accurate.

Claims

1, the financial multifunctional calculator of a kind of industrial and commercial enterprises, include casing, keyboard, LCDs and arithmetic control circuit, it is characterized in that: the keyboard on machine shell panel has additional: tax rate setting (M+), valency tax total, total sales (GT), the amount of tax to be paid, the tax rate remove (CM) and the tax rate is verified (RM) six dedicated button; Panel is provided with one makes counter have " taxing " operation-control switch of taxing with automatic accumulation function; The inner arithmetic control circuit that is provided with of casing is to set up thirty system counting/divider integrated circuit and one to include the taxing exclusive data selector switch that special IC the constituted composition that five NPN transistor are made on-off circuit in the periphery of original counter dedicated IC chip LI3364.

2, the financial multifunctional calculator of industrial and commercial enterprises as claimed in claim 1, it is characterized in that: above-mentioned thirty system counting/divider integrated circuit is respectively as frequency divider, amount of tax to be paid data selector and valency tax total data selector switch.

3, the financial multifunctional calculator of industrial and commercial enterprises as claimed in claim 1, it is characterized in that: above-mentioned decimal system counting/divider integrated circuit can be selected CMOS CD4017 chip for use.

4, industrial and commercial enterprises as claimed in claim 1 finance multifunctional calculator is characterized in that: " permission " pin EN of two decimal system counting/divider integrated circuit that two dedicated array of keys that the above-mentioned amount of tax to be paid and valency tax add up to add up to amount of tax to be paid data selector and valency tax respectively links to each other.