CN2837917Y - The USB converter that is used for tax-control cash register - Google Patents
The USB converter that is used for tax-control cash register Download PDFInfo
- Publication number
- CN2837917Y CN2837917Y CN 200520065960 CN200520065960U CN2837917Y CN 2837917 Y CN2837917 Y CN 2837917Y CN 200520065960 CN200520065960 CN 200520065960 CN 200520065960 U CN200520065960 U CN 200520065960U CN 2837917 Y CN2837917 Y CN 2837917Y
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- usb
- control
- tax
- cash register
- chip
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Abstract
A kind of USB converter that is used for tax-control cash register, it belongs to the accessory of tax-control cash register, it is characterized in that it comprises: a converter shell; A USB interface; A RS232 chip; A control chip is used for the USB control chip with the USB device interface; A crystal oscillator is as the master cpu clock; A crystal oscillator is used for USB control IC; A master cpu, be used to control USB IC and with the tax control machine communication.The utility model has been realized tax-controlling machine, and particularly tax-control cash register connects the function of USB or portable hard drive, and what make data moves and transmit more convenient, can strengthen the function of tax-control cash register, improves the utilization factor of usage ratio of equipment and data.
Description
Technical field:
The utility model relates to a kind of USB converter that is used for tax-control cash register, and it belongs to the accessory of tax-control cash register.
Background technology:
Flash disk has been widely used in data and has shifted the field at present, is USB device a kind of easy to carry, easy to use.But in the existing tax-control cash register, because structure and design problem but are not provided with USB interface.Because tax-controlling device all is not with USB interface mostly, makes tax-controlling device all have very big defective aspect data storage and the transfer.If but on existing tax-controlling device, directly to transform, its difficulty is bigger, and is not actual.Particularly, do not have to connect the interface of USB or portable hard drive, in daily use, can cause very big inconvenience, because at present a lot of data all shift by portable hard drive or flash disk for tax-control cash register.
Summary of the invention:
The purpose of this utility model is to provide a kind of tax-controlling machine of can realizing to connect the USB converter that is used for tax-control cash register of flash disk.
The purpose of this utility model is achieved in that
A kind of USB converter that is used for tax-control cash register is characterized in that it comprises
A converter shell;
A USB interface;
A RS232 chip;
A control chip is used for the USB control chip with the USB device interface;
A crystal oscillator is as the master cpu clock;
A crystal oscillator is used for USB control IC;
A master cpu, be used to control USB IC and with the tax control machine communication.
The described USB control chip that is used for the USB device interface is the SL811 chip.
Be used to control USB IC and with the master cpu of tax control machine communication be Upsd3254.
The utility model has been realized tax-controlling machine, and particularly tax-control cash register connects the function of USB or portable hard drive, and what make data moves and transmit more convenient, can strengthen the function of tax-control cash register, improves the utilization factor of usage ratio of equipment and data.
Description of drawings:
Accompanying drawing 1 is a structural representation of the present utility model
Accompanying drawing 2 is circuit theory diagrams of the present utility model
Accompanying drawing 3 is UBS interface circuit figure of the present utility model
Accompanying drawing 5 is the utility model RS232 interface circuit figure
Accompanying drawing 6 is the utility model central processing unit DLL (dynamic link library) circuit diagram
Embodiment:
Be the embodiment of this time utility model with accompanying drawing 1,2,3,4,5,6 below, the utility model be further detailed:
In the present embodiment, the utility model comprises following part,
A converter shell 1, a described USB interface is arranged on the outer wall of described converter shell 1; Be provided with 2, one of RS232 chips in described converter shell 1 inside and be used for 4, one crystal oscillators 6 of control chip with the USB device interface as the master cpu clock; 7, one of crystal oscillator that are used for USB control IC be used to control USB IC and with the master cpu 3 of tax control machine communication.
The model of described in the present embodiment RS232 chip is MAX202; With control chip 4 models of USB device interface be SL811; Crystal oscillator as the master cpu clock is 24MHz; The crystal oscillator 7 that is used for USB control IC is 48MHz; Be used to control USB IC and be Upsd3254 with the master cpu chip 3 of tax control machine communication.
Above-mentioned each device of the present utility model connects and composes the complete circuit diagram of the utility model according to the circuit diagram of accompanying drawing 3～6, and has realized the function of the utility model as the usb interface connector of tax-control cash register.
As shown in accompanying drawing 2, in described circuit theory diagrams, master cpu 3 is used for controlling the operation of USB interface: the initialization USB interface, control itself and the communicating by letter of USB device, and finish usb communication agreement etc., master cpu also will communicate with tax control machine.RS232 and other circuit are finished the interface on the hardware, and the DLL (dynamic link library) circuit is finished programming to central processor CPU.
Claims (3)
1, a kind of USB converter that is used for tax-control cash register is characterized in that it comprises
A converter shell (1)
A USB interface (5);
A RS232 chip (2);
A control chip (4) is used for the USB chip controls with the USB device interface;
A crystal oscillator (6) is as the master cpu clock;
A crystal oscillator (7) is used for USB control IC;
A master cpu (3), be used to control USB IC and with the tax control machine communication.
2, the USB converter that is used for tax-control cash register described in claim 1 is characterized in that the described USB control chip (4) that is used for the USB device interface is the SL811 chip.
3, the USB converter that is used for tax-control cash register described in claim 1, it is characterized in that being used to controlling USB IC and with the master cpu (3) of tax control machine communication be Upsd3254.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520065960 CN2837917Y (en) | 2005-10-21 | 2005-10-21 | The USB converter that is used for tax-control cash register |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520065960 CN2837917Y (en) | 2005-10-21 | 2005-10-21 | The USB converter that is used for tax-control cash register |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2837917Y true CN2837917Y (en) | 2006-11-15 |
Family
ID=37392407
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520065960 Expired - Fee Related CN2837917Y (en) | 2005-10-21 | 2005-10-21 | The USB converter that is used for tax-control cash register |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2837917Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101414333B (en) * | 2008-05-05 | 2011-04-06 | 航天信息股份有限公司 | Time safety transfer apparatus and time update method for transfer system |
| CN102063400A (en) * | 2011-01-06 | 2011-05-18 | 北京天地融科技有限公司 | Switching device for general serial bus equipment |
-
2005
- 2005-10-21 CN CN 200520065960 patent/CN2837917Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101414333B (en) * | 2008-05-05 | 2011-04-06 | 航天信息股份有限公司 | Time safety transfer apparatus and time update method for transfer system |
| CN102063400A (en) * | 2011-01-06 | 2011-05-18 | 北京天地融科技有限公司 | Switching device for general serial bus equipment |
| CN102063400B (en) * | 2011-01-06 | 2013-03-13 | 天地融科技股份有限公司 | Switching device for general serial bus equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |