RFID (Radio Frequency Identification Device)-based miniature input terminal with low power consumption and implementation method thereof
An input terminal, low-power technology, applied in the field of low-power miniature input terminals, to achieve the effect of good mobility and operability, and convenient input
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[0021] Such as figure 1 As shown, the output terminal of the power supply circuit 1 is respectively connected to the single-chip circuit 2, the keyboard circuit 3, the laser pointer projection circuit 4, the signal wake-up circuit 5, the LED drive circuit 6 and the serial port drive circuit 7, and the signal input terminal of the single-chip circuit 2 is connected to the keyboard circuit 3. The signal output terminal of the single-chip microcomputer circuit 2 is connected to the signal wake-up circuit 5 . The power supply circuit 1 is a 5V to 3.3V circuit, the single-chip microcomputer circuit 2 includes a microcontroller MCU, two crystal oscillator circuits, a reset circuit and a JTAG download circuit, the keyboard circuit 3 is a 4*4 keyboard, and the laser pointer projects The circuit 4 directly controls the on and off through the power switch, and the signal wake-up circuit 5 includes two parts: the sending end and the receiving end, the sending end wirelessly sends the con...
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