CN87207769U

CN87207769U - Electronic taxes-collecting apparatus

Info

Publication number: CN87207769U
Application number: CN 87207769
Authority: CN
Inventors: 黄铁生
Original assignee: Individual
Current assignee: Individual
Priority date: 1987-05-13
Filing date: 1987-05-13
Publication date: 1988-09-28

Abstract

The utility model discloses an electronic tax-collecting apparatus which is a modern electronic tax-collection tool. Tax organizations can use the electronic tax-collecting apparatus to periodically check and calculate the business sales and the taxes of a taxpayer, but the taxpayer can not eliminate secretly or modifies the data which is stored in the tax-collecting apparatus. The electronic tax-collecting apparatus also has cashing function, which is convenient for taxpayers to daily cast accounts to use, and the electronic tax-collecting apparatus is provided with a printer and can provide invoices to customers. The central part of the electronic tax-collecting apparatus is a microprocessor which is provided with a read-write memory, a read only memory, a timing circuit, a power supply automatic switching circuit unit, an input / output interface, a liquid crystal display, a keyboard, etc. The keyboard is provided with Chinese character keys, and the Chinese characters are like 'shuishou' and 'shuilv'. The internal part of the electronic tax-collecting apparatus is provided with a zero clearing unit which is stamped and sealed by tax-collecting organizations. The appearance and the size of the electronic tax-collecting apparatus are like the appearance and the size of a calculator, the sizes are about 180 millimeters *100 millimeters *30 millimeters, the weight is about 400 grams, and the cost is low.

Description

Electronic taxes-collecting apparatus

The utility model relates to a kind of Mechatronic device, and do business total charge meter is calculated And management tax thereby it is used for adding up the retailer.This compress can also be used for calculating, cashier, data printing and demonstration except that meter is calculated And management tax.

Electronic calculator of the prior art is a computational tool.Use it when selling, the business amount of money can't add up and record automatically, and government revenue collecting office more can't make its business data not be damaged, and can not print invoice.Common cash register of the prior art can only be done and calculate cashier's usefulness, needs to use AC power, can not preserve data after the outage, can not be used to manage tax revenue, and quite heavy, and mobile big retail vendor also can't be the cashier with it.

The purpose of this utility model provides a kind of mechano-electronic compress; especially portable mechano-electronic compress; can be with it in charge that commodity are valuated; calculate left fund and get invoice or the process of receipt in, automatically the business sales that will at every turn the sell ， And that adds up is protected; to guarantee the strict control business sales; calculate the tax that to pay, have only government revenue collecting office just to allow the cancellation protection, take out Shuo Ju And zero clearing.

By constituting of following technical scheme, realize the purpose of this utility model:

1. the keyboard system with button is set, add except that having, subtract, multiplication and division, percentage and ten the arabic numeral buttons, also have " total ", " checking out ", " total value ", " tax rate ", " tax " dedicated button, it is arranged as shown in Figure 1 as embodiment.

2. special-purpose memory unit is set, with automatic record business accumulative total total charge.It is arranged on the circuit board, and circuit board sees as the item 16 among Fig. 3 of embodiment.

3. special-purpose memory has power source special that is independent of whole device power supply and the standby power supply that can drop into automatically, this two power supply places in the compress shell, as as the

item

14 and 15 among Fig. 3 of embodiment, when the device primary power turn-offs, power source special works on, when if power source special is ineffective, standby power supply drops into automatically, thereby can not cause the total charge loss of data.

4. the standby power supply of above-mentioned special-purpose memory installs in closed chamber, and closed chamber is encrypted sealing by government revenue collecting office.As in Fig. 2 as embodiment, use special screw to fix the lid of closed chamber, And adds the lead sealing seal note by government revenue collecting office.Can prevent from like this to dismantle standby power supply privately and make the total charge loss of data.On the other hand, the total metal zero clearing button of business accumulative total also is sealed in the same closed chamber at standby power supply place, and before this button of operation, must import a security code with keyboard in advance, otherwise button is inoperative.This security code all is that different And deposits in the read only memory ROM of device in advance for each table apparatus, have only government revenue collecting office to have the right to find, so just stopped other people and used this zero clearing button to eliminate the possibility of accumulative total total charge according to the factory serial number of device.

Now structure of the present utility model and using method are described with embodiment:

Fig. 1 is the front view (FV) of electronic toll collection device, and Fig. 2 is its reverse side figure, and Fig. 3 is the A-A sectional view of Fig. 1.When power turn-on switch 2 use of can starting shooting.Above-mentioned operations button is housed on the keyboard 7.Check 5 of the commodity of 510.15 yuan of valencys of existing certain user, 10 of the commodity of 120.20 yuan of the valencys of checking again, then operating process is as follows:

Import the 1st unit price 510.05 with keyboard

By * key, import 5 again

By adding up to key, this moment, LCD illustrated

510.15×5＝2550.75

Import the 2nd unit price 120.20 with keyboard

By * key, import 10 again

By adding up to key, calculate total charge and be this moment

2550.75+120.20 * 10=3752.75 And shows

Existing user hands over money 3760.00 ， And to show

The above operation of repetition, to avoid mistake, then by the key of checking out, at this moment, it is as follows by mini-printer 5 printing invoices that this device is added to business total charge storage unit ， And automatically with 3752.75 yuan of this business total charges:

3752.75

3760.00

7.25

312650

Wherein 7.25 is remaining sum, and 312650 is invoice number

In computation process, if by " total clear " key, the data that then clear all, calculating is started all over again from the beginning.

If by " local zero clearing " key, then only remove data of input just now.

By the numerical key import tariff on the keyboard 7, for example 0.15, " tax rate " key on the keypad 7 and " tax " key can be calculated tax=total charge * 0.15 ， And and be shown again.

By " total value " key, can on display, demonstrate the accumulative total business total charge of memory stores.But if will remove this total value numerical value, must open lead sealing (or wax sealing note) 10 as shown in Figure 2, take off marking sealing steel wire 9, just can back out gib screw 8, because be drilled with on the screw 8 aperture, the sealing steel wire 9 be through in the aperture, open standby power supply and zero clearing button cover plate 11 then,, could pass through the zero clearing button 19(Fig. 3 in the cover plate 11 by numerical key input password figure for example 356874) elimination business total charge totally.

Item No. 1 among Fig. 1 is to change the battery signal device, is made of resistance and light emitting diode, if this signalling means is luminous very weak or not luminous, illustrate that battery should change, and answers opening power cover plate 13 this moment, the replacing battery.

Item No. 15 is power supplys, comprises that primary power is (referring to the S among Fig. 4 and Fig. 5 ₁) and the power supply of read-write memory RAM (referring to the S of Fig. 4 and Fig. 5 ₂).Item No. 14 is that the standby power supply of read-write memory RAM is (referring to the S of Fig. 4, Fig. 5 ₃).These power supplys can get final product with commercially available battery.

Item No. 16 among Fig. 3 is mounted in the circuit board in the shell, and the circuit of this device is concentrated and is loaded on this plate.

Item No. 3 is printer paper-feeding buttons, starts the empty paper feed of printer.

Fig. 4 is the system block diagram of electronic toll collection device; Fig. 5 is the detailed electrical wiring diagram of Fig. 4, is marked with the commercial model into the usefulness of giving an example among the figure, and the symbol among Fig. 4 has corresponding mark in Fig. 5.Now in conjunction with Fig. 4,5 explanation compress principle of work:

Symbol M ic is the central processing unit CP of electronic toll collection device, adopting Z80 item No. K in force is keyboard, the matrix that it is made up of resistance and switch, by model be 74HC273, and model be that the buffer of 74HC244 is formed I/O interface (input/output interface), Mic delivers to the matrix alignment with sweep signal through 74HC273, and the keyboard operation signal is delivered to 74HC244 by the matrix line, delivers to Mic again.By keyboard can send into digital signaling zero to 9, radix point, add, subtract, multiplication and division equal sign, number percent, add up to, check out, signals such as total value, tax, total clear, local clear, printer paper-feeding, promptly utilize keyboard can carry out whole input operations.

Item No. Z is a zero clearing button of removing the business total charge, is sealed in individually in the closed chamber that is added with the envelope note, is not subjected to other non-authority of office personnel's operation to protect it.

The model of ROM among the embodiment is 2732.Data that the electronics tax-accounting device occurs in calculating process and the total metal of business accumulative total etc. remember all that in read-write memory RAM the close model of executing the RAM in the example is 2128.MiC selects RAM or ROM by code translator 74HC138.The gating blockade unit that is made of resistance makes the gating end CE of RAM be in noble potential when main power switch disconnects, thereby reaches the purpose of blocking RAM.

MiC forms the I/O circuit by the latch that is 74HC273 by 3 models, tri-state gate circuit that model is 74HC125 and resitstance voltage divider RK1 and RK2, relevant data information can be delivered to LCD Dis and be shown.The gating of keyboard I/O or LCD, be that the code translator of 74HC138 is finished by model.

MiC is the I/O circuit that the latch of 74HC273, buffer that model is 74HC244 constitute by model, and model is the driver Dr of LB1268-4L2, is the mini-printer DY of EpsoN Model41 with the control model.Character wheel reset signal, main bang and the auxiliary pulse signal of the motor of driver Dr control mini-printer DY and electromagnet, mini-printer are sent MiC back to by buffer 74HC244, can print correct data like this.

(74HC04 is made up of 6 identical phase inverters the reverser that timing unit T is 74HC04 by two models, be 74HC041/6 so each phase inverter is annotated), electric capacity, resistance is Ji the oscillator that And connection resonant crystal XTAL constitutes and be that the frequency division shaping circuit that the D-latch of 74H,C74 1/2 and phase inverter that model is 74H,C04 1/6 constitute is formed by model, it sends time pulse to MiC, makes its energy operate as normal.

This device has 3 power supplys.Power supply S wherein ₁By switch to the whole circuit supplies except read-write memory RAM.Power supply S ₂And power supply S ₃The automatic switchover device CH that forms by the diode that is 2CP10 by 3 models powers to read-write memory RAM.S ₃Be S ₂Standby power supply, it is sealed in the closed chamber, can not lose and is changed by non-authority of office personnel to ensure data among the RAM.

This device also can be done general cash register and counter and use.

Other embodiments of the present utility model are: for example use single-chip microcomputer to replace Z80, because single-chip microcomputer itself has ROM (read-only memory) and read-write memory, so needn't adorn ROM (read-only memory) outward separately, or the only equipped less ROM (read-only memory) of capacity, at this moment, business accumulative total total charge can directly be kept in the single-chip microcomputer.In addition, also can adopt the identical low energy consumption device of function, can also adopt non-packaged type component groups to synthesize thick film circuit.When employing had the single-chip microcomputer of LCD, the I/O interface and the driving circuit of display all were incorporated in the single-chip microcomputer.Repertoire device except that LCD, keyboard, printer and power supply can also be made whole large scale integrated circuit.

Claims

1, electronics is received sharp device, by shell, be loaded on the keyboard of case surface, display, and be loaded on printer in the shell, power supply and circuit board are formed, microprocessor is housed on the circuit board, timing unit power supply joint automatically changes the unit, read to decide storer, ROM (read-only memory), input/output interface circuit and printer driver circuit, input signal passes through input/output interface circuit input microprocessor by keyboard, handle by the ROM (read-only memory) that is connected with microprocessor and the interaction partners input signal of read-write memory and timing circuit again, the data that produced, comprise business progressive total data, be stored in the read-write memory, microprocessor is with intermediate result and the net result handled, delivering to the data that display ， And will do business at every turn by the input/output interface circuit is up to by printer by input/output interface circuit and driving circuit.

It is characterized in that for read-write memory is provided with independent current source and standby power supply, power supply can automatically switch, can not interrupt, thereby protection business accumulative total total charge data are not washed out to guarantee power supply; Zero clearing button and standby power supply together Zhuan Zhi And are sealed in the closed chamber, remove business accumulative total total charge An Jian And by the input/output circuitry that is installed on the circuit board with this, closed chamber has government revenue collecting office to seal up mark, by importing password figure before the zero clearing button.

2, electronic toll collection device as claimed in claim 1 is characterized by:

Power supply automatic switchover circuit is made up of the diode that the quantity that is connected on respectively on power supply and the standby power supply does not wait.