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Power switch (ON/OFF): Main power switch of machine;
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Light sensor board: Acquires the value of ambient light and sends it to the mainboard;
➢
Touch frame adapter board: Converts serial port signals to USB signals to provide touch signals for
Android mainboard;
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IR board: Receives remote control signals from the remote control and sends them to the
mainboard;
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Key board: Acquire button signals and sends them to the mainboard;
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OPS adapter board: OPS port to HDMI port, USB port and power port.
3.3 IFP internal wiring Diagram
