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Parallel port

In computing, a parallel port is a type of interface found on early computers for connecting peripherals. The name refers to the way the data is sent; parallel ports send multiple bits of data at once, as opposed to serial communication, in which... Wikipedia
Cable: Usually up to 25 wires including ground; optionally shielded
Connector: DB-25, DB25F, "Centronics" 36-pin Amphenol, DC-37, others
Designed: 1970–1981
Manufacturer: Centronics, Dataproducts, Intel, IBM, Compaq, Nortel, etc
Pins: 8 data, 4 output control, 5 input control, 8 ground
Protocol: Application dependent
Width: Variable