keyboard checking circuit的意思|示意

键盘检测电路 ... keyboard 开关板；键盘；按钮，电键板 keyboard checking circuit 键盘检测电路 keyboard common contact 键盘公共触点 ...

键盘检查电路 全自检查电路 totally self-checking circuit ; checking circuit 键盘检查电路 keyboard checking circuit 部分自检查电路 partially self-checking circuit ; checking circuit ..