ߣ
GND            GND
5vVCC      5vVCC
RXD            RXD
TXD            TXD

ڹĵӰ쵽5V߲ýӣֱõԴ߹磬صʱƬҪ
˼ǵƬҪϵϵأѵԴصУӺõҪϿ
ϵͿˣλӷһòԴٲϣõԴֱӹС