CN2237257Y - Multiple port signal input/output unit - Google Patents

Abstract

The utility model relates to a multiple port signal input/output unit. The import and export port of a central processor is connected with the import and export port of a cash register device (EZ-POS) through RS-232C, eight serial ports generated by the output end of the cash register device are connected with peripheral devices, only one communication port of the central processor is provided, eight ports are extended through the cash register device, and the peripheral devices are connected with the eight ports. Thus the central processor can process each peripheral device in time, the daily transaction account is directly recorded in the account recording read only memory, the data can be written only once, and the repeat writing is forbidden.

Description

The multiple port signal input/output device

The utility model relates to a kind of multiple port signal input/output device.

The general computer equipment that uses, display in its peripheral peripheral equipment and keyboard all is furnished with specific output terminal, and for other external peripheral units, just only staying COM1 is connected with the RS-232C card, so general COM1 can be connected with printer, COM2 then may use mouse, as using the 3rd peripheral unit again, then must nationality COM1 or the port of COM2 when not using, be folded down and refill the peripherals that will use, its reason is that the interface function of traditional RS-232C card is that a patrilineal line of descent with only one son in each generation send and single receiving trap, so a communication port can only an external terminal device.And MS-DOS provide is the program that COM1 and COM2 drive, so the user must be required and change plug according to it.If in a working time, may use four respectively, during five kind of peripheral unit, will spend on the plug that the plenty of time is used in dismounting and installing peripherals.Therefore, the user wants with the RS-232C interface more than three, just essential spended time is with software development COM3, COM4 or the driver of multiport more, its development cost height does not have standard specification again, so, the manufacturer that has just is improved to the RS-232C driver of interface card with multiplex's mode and works, and makes signal successfully data be spread out of or receive data thus during the some unlatching in several passages from computer.This design can make central processing unit connect a plurality of peripherals, and still, this central microprocessor can't in time be dealt with to each peripherals.

Fundamental purpose of the present utility model is to address the above problem and provide a kind of to utilize external mode to draw a communication port to CPU (central processing unit), can extend 8 mouths via cashier's machine device (EZ-POS) and connect, so that CPU (central processing unit) can be made timely processing to each peripherals to peripherals.

Another purpose of the present utility model is the day account of transaction every day directly is recorded in the record account ROM (read-only memory).

A purpose more of the present utility model is that the day account of every day transaction writes direct in the record account ROM (read-only memory), and writing of data only allows to write once, must not repeat to write, and this is the characteristics of its hardware, also can make things convenient for government bodies to audit, prevent hotel owner's volume of evading taxation.

The utility model is achieved in that it is to go into end by central processing unit output inlet by the output that RS-232C connects the cashier's machine device, produce 8 serial ports by cashier's machine device output terminal again, connect each peripherals respectively, it is characterized in that: the cashier's machine device mainly is to be connected to first and second communication port with microprocessor output inlet respectively by data bus, third and fourth communication port, five, six communication ports and ROM (read-only memory), the I/O port of read-write memory; Another output port with microprocessor is connected to first and second communication port respectively by address bus again, third and fourth communication port, the 5th, six communication ports and hardware peripheral components, the input port of ROM (read-only memory) and read-write memory; Again with first and second communication port, third and fourth communication port, five, the output terminal of six communication ports is connected to each peripherals by RS-232C, also the 7th, eight communication ports that include with microprocessor and the output terminal of the 9th communication port are connected on the I/O port of each peripherals and central processing unit by RS-232C, another output terminal with first and second communication port and third and fourth communication port and the 5th, six communication ports is connected in the record account ROM (read-only memory) again, constitutes a circumscribed multiple port signal input/output device thus.

Above-mentioned first and second communication port is to produce by one that two RS-232C serial ports connect first connector and second connector is constituted.

Above-mentioned third and fourth communication port is to produce by one that two RS-232C serial ports connect the 3rd connector and the 4th connector is constituted.

Above-mentioned the 5th, six communication ports are made of connection the 5th connector and the 6th connector that produces two RS-232C serial ports.

Above-mentioned hardware peripheral components is by driving circuit, multiplexer and code translator constitute, connect the 7th in the microprocessor by the multiplexer input end, eight communication ports, be connected on the 7th connector and the 8th connector by the multiplexer output terminal again, the input end of code translator is connected to the output terminal of read-write memory by data and address bus, the input end of this read-write memory then links to each other with the output terminal of ROM (read-only memory) by data and address bus, connect the output terminal of microprocessor with the input end of ROM (read-only memory) by data and address bus again, be connected to three input ports that produce two RS-232C serial ports with decoder output nationality data and address bus again.

Above-mentioned driving circuit can be divided into first driving circuit and second driving circuit, is connected to respectively in the cashier's machine driving circuit.

The utility model is by the central processing unit I/O port, be connected to the I/O port of cashier's machine device (EZ-POS) by RS-232C, produce eight serial ports by receipts machine silver machine output terminal again and connect each peripherals, CPU (central processing unit) need only provide a communication port, just can extend 8 ports via the cashier's machine device connects to peripheral unit, so that central processing unit is made timely processing to each peripherals, and the day account that can be concluded the business every day directly is recorded in the record account ROM (read-only memory), and writing of these data only allows to write once, must not repeat to write.This hardware characteristics is for conveniently auditing, and preventing to evade taxation provides the equipment assurance.

Fig. 1 is a circuit block diagram of the present utility model.

Fig. 2 is a circuit square frame partial detailed synoptic diagram of the present utility model.

Fig. 3 is a circuit diagram of the present utility model.

Fig. 4 is a circuit diagram of the present utility model.

Fig. 5 is a circuit diagram of the present utility model.

Fig. 6 is a circuit diagram of the present utility model.

Fig. 7 is a circuit diagram of the present utility model.

Ginseng figure Fig. 1, Fig. 2, the utility model mainly is the I/O port that is connected cashier's machine device (EZ-POS) 20 by CPU (central processing unit) 10 I/O ports by RS-232C, produce 8 serial ports by cashier's machine 20 output terminals again and connect each peripherals 30, constitute a circumscribed multiple port signal output/input device thus.

Above-mentioned cashier's machine device (EZ-POS) 20, mainly be with microprocessor 20 I/O ports, connect first respectively by data bus 21a, two communication port (COMA, B) 22, the 3rd, four-way is (COMC casually, D) 23, the 5th, six communication port (COME, F) 24 and ROM (read-only memory) 26, in the I/O port of read-write memory 27, be connected to first with microprocessor 21 another output terminals respectively by address bus 21b again, two communication port (COMA, B) 22, the 3rd, four-way is (COMC casually, D) 23, the 5th, six communication port (COME, F) 24 and hardware peripheral components 25, the input end of ROM (read-only memory) 27; Again with first, two communication ports 22, the 3rd, four-way casually 23, the 5th, the output terminal of six communication ports 24 is connected to each peripheral unit 30 by RS-232C, again with microprocessor 21 include the 7th, eight communication port (COMG, H) output terminal of the 211 and the 9th communication port (COM1) 212 is connected to the I/O port of each peripherals 30 and CPU (central processing unit) 10 by RS-232C, again with first, two communication port (COMA, B) the 22 and the 3rd, four-way is (COMC casually, D) the 23 and the 5th, six communication port (COME, F) 24 other end output terminal is connected in the record account ROM (read-only memory) 28, wherein:

First and second communication port 22 is made of two RS-232 serial ports of a generation, 221 connection first connectors 222 and second connector 223.

Third and fourth communication port 23 is made of two RS-232 serial ports of a generation, 231 connection the 3rd connectors 232 and the 4th connector 233.

Five, six communication ports 24 are made of two RS-232 serial ports of a generation, 241 connection the 5th connectors 242 and the 6th connector 243; Produce two RS-232 serial ports 221 with three more respectively, 231,241 are connected in the input end of record account ROM (read-only memory) 28, be connected in the driving circuit 251 of hardware peripheral components 25 at two RS-232 serial port 241 output terminals of generation in addition, this driving circuit 251 can be divided into first driving circuit 2511 and second driving circuit 2512, be connected to respectively in the cashier's machine driving circuit, when central processing unit 10 is issued orders when receiving microprocessor 21 by the 9th connector 2121, microprocessor 21 utilizes demoder 253 and data, address bus 21a, 21b drives the delivery outlet arranged side by side that produces two RS-232 serial ports 241, opens silver cabinet by driving circuit 25 again.

Hardware peripheral components 25 is made of driving circuit 251, multiplexer 252 and demoder 253.Connect the 7th in the microprocessor 21 with multiplexer 252 input ends, eight communication ports 211, be connected on the 7th connector 2111 and the 8th connector 2112 by multiplexer 252 output terminals again, pass through data and address bus 21a with code translator 253 input ends again, 21b connects the output terminal of read-write memory 27, input end with read-write memory 27, nationality data and address bus 21a, 21b connects the output terminal of ROM (read-only memory) 26, input end with ROM (read-only memory) 26 passes through data and address bus 21a again, 21b connects the output terminal of microprocessor 21, and passes through data and address bus 21a with code translator 253 output terminals again, 21b connects three and produces 221 of two RS-232 serial ports, 231, in 241 the input end.

Cashier's machine device (EZ-POS) 20 has produced data buffer in order to solve the problem that CPU (central processing unit) 10 is in time handled, i.e. peripherals transmission or reception data all are to come operation by the data buffer area of cashier's machine device (EZ-POS) 20.For example, first connector 222 connects cashier's machine keyboard (Pos Keyboard), second connector 223 connects scanner (CCD Scanner), the 3rd connector 232 connects cashier's machine display (POS display), the 4th connector 234 connects the printer (POSPrinter) of cashier's machine, silver cabinet (Cash drawer) is connected to first driving circuit 2511, when client has chosen article, wait for that the sales counter personnel use scanner the strip of articles code data to be delivered to second connector 223 of cashier's machine 20, at this moment, the data of this connector 223 are passed on into parallel data by the second portion serial port that produces two RS-232 serial ports 221 with serial data and are delivered to microprocessor 21, the data working area that microprocessor 21 is put into read-write memory 27 with the data of lump-sum approval waits for that central processing unit 10 extracts, and the signal that sends " data with existing enters " is given central microprocessor 10, central microprocessor 10 is received the data entering signal of cashier's machine device 20, work during neutral gear by the 9th communication port 212 directly and the serial port of microprocessor 21, link up with serial data, require to read the peripheral data that newly enters.Cashier's machine device 20 is sent to central microprocessor 10 by the 9th connector 2121 of being come in and gone out by the 9th communication port 212 with data, central microprocessor 10 is by the scanner judgment data, carry out calculation process simultaneously, give cashier's machine device 20 with the data of desiring to be sent to cashier's machine display and printer, cashier's machine device 20 is collected this data from the 9th connector 2121, temporarily leave read-write memory 27 in, cashier's machine device 20 is sent to the 3rd connector 232 and the 4th connector 233 that produces two RS-232 serial ports 231 with data when neutral simultaneously, and data are delivered to cashier's machine display and printer.When client learns dealing money, money is given sales counter, sales counter personnel operation cashier's machine keyboard, the amount of money is imported, at this moment, amount of money data are deposited to the data working area of the read-write memory block 27 of cashier's machine device 20 to producing two RS-232 serial ports 221 by first connector, and principle is with last identical.Computing after the reading of data of central microprocessor 10, and deliver to the small change amount of money on the cashier's machine display of the 3rd connector 232 by cashier's machine device 20, show the small change amount information, deliver to the data of complete invoice on the printer of the 4th connector 233 by cashier's machine device 20 again, the invoice of will concluding the business prints off, and open silver cabinet and will beat fractionl amount and give client, finish transaction.

In the said process, ROM (read-only memory) 26 is to deposit the running program of cashier's machine device 20, and all operations of cashier's machine device 20 all is that little processing 21 is read read-only access to memory 26 internal processes data and decided its action.

After hotel owner's transaction in a day is finished, central microprocessor 10 is after settlement of account, the day account data on the same day are delivered to cashier's machine machine 20 by the 9th communication port 212, this device 20 is again by three ROM (read-only memory) 28 that produce the parallel port controlling recording account of two RS-232 serial ports 221,231,241, data are write record account ROM (read-only memory) 28 write down the accounts of transaction every day, and writing of data only allows to write once, must not repeat to write, this is an ardware feature, also prevents that for government bodies audit family's volume of evading taxation from providing convenience.

Claims (6)

1, a kind of multiple port signal input/output device, it is to go into end by central processing unit output inlet by the output that RS-232C connects the cashier's machine device, produce 8 serial ports by cashier's machine device output terminal again, connect each peripherals respectively, it is characterized in that: the cashier's machine device mainly is to be connected to first and second communication port with microprocessor output inlet respectively by data bus, third and fourth communication port, the 5th, six communication port and ROM (read-only memory), the I/O port of read-write memory; Another output port with microprocessor is connected to first and second communication port respectively by address bus again, third and fourth communication port, the 5th, six communication ports and hardware peripheral components, the input port of ROM (read-only memory) and read-write memory; Again with first and second communication port, third and fourth communication port, five, the output terminal of six communication ports is connected to each peripherals by RS-232C, also the 7th, eight communication ports that include with microprocessor and the output terminal of the 9th communication port are connected on the I/O port of each peripherals and central processing unit by RS-232C, another output terminal with first and second communication port and third and fourth communication port and the 5th, six communication ports is connected in the record account ROM (read-only memory) again, constitutes a circumscribed multiple port signal input/output device thus.

2, multiport input/output device as claimed in claim 1 is characterized in that: above-mentioned first and second communication port is to produce by one that two RS-232C serial ports connect first connector and second connector is constituted.

3, multiport input/output device as claimed in claim 1 is characterized in that: above-mentioned third and fourth communication port is to produce by one that two RS-232C serial ports connect the 3rd connector and the 4th connector is constituted.

4, multiport input/output device as claimed in claim 1 is characterized in that: above-mentioned the 5th, six communication ports are to produce by one that two RS-232C serial ports connect the 5th connector and the 6th connector is constituted.

5, multiport input/output device as claimed in claim 1, it is characterized in that: above-mentioned hardware peripheral components is by driving circuit, multiplexer and code translator constitute, connect the 7th in the microprocessor by the multiplexer input end, eight communication ports, be connected on the 7th connector and the 8th connector by the multiplexer output terminal again, the input end of code translator is connected to the output terminal of read-write memory by data and address bus, the input end of this read-write memory then links to each other with the output terminal of ROM (read-only memory) by data and address bus, connect the output terminal of microprocessor with the input end of a read-write memory by data and address bus again, be connected to three input ports that produce two RS-232C serial ports with decoder output nationality data and address bus again.

6, multiport input/output device as claimed in claim 5 is characterized in that: above-mentioned driving circuit can be divided into first driving circuit and second driving circuit, is connected to respectively in the cashier's machine driving circuit.

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