Xinuo Wal-way iChart User Manual page 9

Electronic chart system
positive, Pin 2 is negative)!
Power Interface definitions as shown right:
1. The power of positive electrode
2. The power of negative electrode
The keyboard interface definitions as shown right:
1.VCC
2.KB—DATA
3.GND
4.KB—CLK
USB interface definitions as shown
1.VCC
2. DATA+
3.GND
4. DATA-
Data 1 as shown below:
Data 2 as shown below:
Data 3as shown below:
right：
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