POS machine printing method and POS machine printing device
A technology of POS machines and printing devices, applied to instruments, cash registers, etc., can solve problems such as disconnection, poor signal, unclear documents, etc., and achieve the effects of convenient use, short transmission distance, and improved clarity
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Embodiment 1
[0037] see figure 1 , is a schematic flow chart of Embodiment 1 provided by the present invention.
[0038] Described POS machine printing method comprises:
[0039] Step 1 provides a POS machine body and a printer, the two are connected in an integrated structure, and the printer is placed at one end of the POS machine body for structural connection;
[0040] Step 2 provides a level shifter, the input end of the level shifter is connected with the battery in the POS machine body, and the two output ends of the level shifter are connected with the CPU of the POS machine body and the POS machine body respectively. The MCU of the printer is connected, and different voltages are delivered to the CPU of the POS machine body and the MCU of the printer;
[0041] After the POS machine body in step 3 completes the order, payment, card coupon verification or coupon distribution, it forms the information data to be printed, and transmits the information data to the printer, and the pr...
Embodiment 2
[0046] see figure 2 , is a schematic flow chart of Embodiment 2 provided by the present invention.
[0047] Described POS machine printing method comprises:
[0048] Step 1 provides a POS machine body and a printer, the two are connected in an integrated structure, and the printer is placed at one end of the POS machine body for structural connection;
[0049] Step 2 provides a level shifter and a voltage stabilizing module, the input end of the level shifter is connected to the battery in the POS machine body, and the two output ends of the level shifter are respectively connected to the POS machine body The CPU of the POS machine is connected to the input end of the voltage stabilizing module, and different voltages are delivered to the CPU of the POS machine body and the voltage stabilizing module, and the output end of the voltage stabilizing module is connected to the MCU of the printer;
[0050] After the POS machine body in step 3 completes the order, payment, card c...
Embodiment 3
[0052] Please also refer to image 3 and Figure 4 , image 3 It is a schematic diagram of the external structure of Embodiment 3 provided by the present invention; Figure 4 It is a block diagram of the component structure of Embodiment 3 provided by the present invention.
[0053] Described POS machine printing device 1 comprises POS machine body 11, printer 13 and level converter 15, and described printer 13 is connected with described POS machine body 11, and described level converter 15 is located at described POS machine body 11 and connected with the printer 13.
[0054] The POS machine body 11 includes a CPU 111 and a battery module 113, the battery module 113 provides power for the CPU 111, and the battery module 113, the level shifter 15 and the CPU 111 are connected in sequence. In this embodiment, the output voltage of the battery module 113 is 4.35V, and after being processed by the level shifter 15 , the output voltage to the CPU 111 is 1.8V.
[0055] The prin...
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