2007-09-20

串口连接器: DB-9? DE-9!

http://www.nullmodem.com/DB-9.htm


DB-9 (Really DE-9)


The DE-9 D-sub 9-pin connector is often mistakenly referred to as the "DB-9" connector. The "E" refers to the shell size.


A "DB-25" connector has a "B" size shell, but the common nine-pin connector is smaller and has an "E" size shell.

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