RS-232 Bus Description and EIA232 Pinout
EIA-232 Bus Pin-Out RS232 Pinout: The RS232 specification only defines the pin-out for a 25 pin D-sub connector; however, the 9 pin is used more often (defined by EIA-574). A 26 pin connector is also called out in the RS232 spec. EIA-561 calls out an 8 pi...