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2. Parallel port - Wikipedia

   en.wikipedia.org/wiki/Parallel_port

   The parallel port interface was originally known as the Parallel Printer Adapter on IBM PC-compatible computers. It was primarily designed to operate printers that used IBM's eight-bit extended ASCII character set to print text, but could also be used to adapt other peripherals.

3. IEEE 1284 - Wikipedia

   en.wikipedia.org/wiki/IEEE_1284

   An IEEE 1284 36-pin female on a circuit board. In the 1970s, Centronics developed the now-familiar printer parallel port that soon became a de facto standard.Centronics had introduced the first successful low-cost seven-wire print head [citation needed], which used a series of solenoids to pull the individual metal pins to strike a ribbon and the paper.

4. Dongle - Wikipedia

   en.wikipedia.org/wiki/Dongle

   A parallel port adapter. There are varying accounts on the etymology of the word "dongle"; in a 1999 paper, P. B. Schneck stated that the origin was unclear, but that it was possibly a corruption of the word "dangle" (since these devices "dangle" from a port on a PC).

5. PC Card - Wikipedia

   en.wikipedia.org/wiki/PC_Card

   This is an Accton Etherpocket-SP parallel port Ethernet adapter (c. 1990). Supports both coaxial and twisted pair cables. Power is drawn from a PS/2 port passthrough cable. Before the introduction of the PCMCIA card, the parallel port was commonly used for portable peripherals. [6]

6. Parallel SCSI - Wikipedia

   en.wikipedia.org/wiki/Parallel_SCSI

   Diagrams of different Parallel SCSI symbols [1]. Parallel SCSI is not a single standard, but a suite of closely related standards. There are a dozen SCSI interface names, most with ambiguous wording (like Fast SCSI, Fast Wide SCSI, Ultra SCSI, and Ultra Wide SCSI); three SCSI standards, each of which has a collection of modular, optional features; several different connector types; and three ...

7. SCSI connector - Wikipedia

   en.wikipedia.org/wiki/SCSI_connector

   SCSI-1 card with an external Centronics port which requires a terminator, from an Acorn computer. Old Macintosh DB-25 SCSI port (narrow) Apple used DB-25 connectors, which, having only 25 pins rather than 50, were smaller and less expensive to make, but decreased signal integrity (increasing crosstalk ) [ citation needed ] and cannot be used ...