Payment equipment and payment method
A payment device and main control module technology, applied in cash registers, instruments, etc., can solve problems such as user inconvenience, and achieve the effect of convenient expansion
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[0045] The main idea of the present invention is to use an audio interface or a USB interface to connect the payment device, so that the payment device can be applied to different types of terminal devices, and the terminal with the USB interface is connected to realize the payment through the USB interface, and the terminal with the audio interface is connected through the audio interface. The interface connection realizes the payment. Before using the audio interface for data communication, first identify the microphone pole and ground pole in the audio interface, then connect the audio signal sending unit in the external device with the identified microphone pole, and connect the ground potential of the external device with the identified ground Pole docking, after the correct docking, combined with digital-to-analog / analog-to-digital conversion to perform data communication between the external device and the communication terminal, so that the payment device can be commo...
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