Electronicchartsystem
positive,Pin2isnegative)!
PowerInterfacedefinitionsasshownright:
1. Thepowerofpositiveelectrode
2. Thepowerofnegativeelectrode
Thekeyboardinterfacedefinitionsasshownright:
1.VCC
2.KB—DATA
3.GND
4.KB—CLK
USB interfacedefinitionsasshownright：
1.VCC
2.DATA+
3.GND
4.DATA-
Data1asshownbelow:
Data2asshownbelow:
Data3asshownbelow:
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