(original) RS232 serial signal definition

Long time no use of hardware, the serial port is long useless use.

Once the interface signal remember very clearly, long, forget.

Today, re-review, note notes.

The DB9 interface is divided into male head and female head, male plug needle, computer chassis how many male head. The female head is the jack socket.

Reasonable hardware design is the male head of the computer for reference, its 2 for the collection, 3 for the hair, 5 for the ground, Memory: male 235 transceiver .

OK, bye.

(original) RS232 serial signal definition