- Centronics printer One of the most used printer interfaces in the past. Now replaced by IEEE1284-B / USB.
- ECP Parallel LPT port (IEEE-1284A) This file is designed to give a basic overview of the port found in most newer PC computers called ECP Parallel port. ECP = Extended Capabilities port. ECP is an extension of the EPP design.
- IEEE-488 (HP-IB, GPIB) bus The Hewlett-Packard Instrument Bus (HP-IB), implemented with name GPIB - General Purpose Instrumentation Bus by othe manufacturers, is a short-range digital communications standard developed by Hewlett-Packard (HP) for connecting electronic test and measurement devices (e.g. digital multimeters and logic analyzers) to controllers such as computers. The bus is still in use for this purpose.
- IEEE1284-B (centronics) printer IEEE1284-B connector (also called Centronics) is widely used in parallel interface printers (except some HP's).
- IEEE1284-C (HP printer) This interface connector may be found at most newer HP printers equipped with LPT port and some other hardware. Connector is half-pitch Centronics (HPCN36) MDR 36.
- PC parallel LPT port One of the most used printer interfaces, since every Intel/DOS/Windows based Personal Computer today has a Sub-D25 female connector which is called LPT1
