A.串行通信數(shù)據(jù) B.并行通信數(shù)據(jù) C.同步串行通信數(shù)據(jù) D.異步串行通信數(shù)據(jù)
A.+3~+12V B.0~+3V C.0~+5V D.+12~+15V
A.5V B.12V C.16V D.24V