Device for implementing POS machine parallel interface data receiving and output for printing and method for use thereof
A POS machine and data technology, applied in the direction of digital output to printing units, cash registers, instruments, etc., can solve problems such as failure, achieve short update time, high work efficiency, and improve work efficiency
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[0041] Embodiment 1, as shown in Figure 1, the device for realizing POS machine parallel port data reception and output printing described in the present invention is to directly connect a separate device between the existing POS machine and the parallel port of the printer.
[0042] The data interface module of the device conforms to the IEEE1284 standard, so as to realize the direct data transmission between the parallel port of the POS machine and the printer.
[0043] The main structure of described device comprises:
[0044] The hardware layer, the parallel port input circuit module and the parallel port output circuit module in the hardware layer, respectively establish physical connections with the parallel port of the POS machine and the printer, so as to establish the parallel port input interface and parallel port output interface of printing instructions and data.
[0045] The operating system layer, the input / output driver module in the operating system layer, real...
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