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Serial And Parallel Port Differences
DocumentID: 633708
Revision Date: 29-Feb-96 3:03:23 PM

The information in this document applies to:
WordPerfect® 5.1 for DOS

Problem

Solutions: A serial port offers two-way communication between a PC and printers, modems, mice, and other peripherals that send large amounts of data back to the computer. A serial port uses a 25-pin or a 9-pin connector (DB-25 or DB-9); the DB-25 is more common. A serial interface is also known as an RS-232-C or an asynchronous communications adapter.

A parallel port is for printers, and on an IBM PC or compatible a parallel port has a 25-pin connector called DB-25. A cable connects the PC to the printer, usually to a 36-pin connector called a Centronics parallel interface. Parallel ports are also known as parallel printer adapters.

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