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2. Parallel port - Wikipedia

   en.wikipedia.org/wiki/Parallel_port

   Today, the parallel port interface is virtually non-existent in new computers because of the rise of Universal Serial Bus (USB) devices, along with network printing using Ethernet and Wi-Fi connected printers. The parallel port interface was originally known as the Parallel Printer Adapter on IBM PC-compatible computers.

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. USB - Wikipedia

   en.wikipedia.org/wiki/USB

   For example, a USB-to-parallel-port converter might work well with a printer, but not with a scanner that requires bidirectional use of the data pins. For a product developer, using USB requires the implementation of a complex protocol and implies an "intelligent" controller in the peripheral device.

5. Printer cable - Wikipedia

   en.wikipedia.org/wiki/Printer_cable

   Printer cable refers to the cable that carries data between a computer and a printer. There are many different types of cables, for example: Serial: RS-232, EIA-422; Parallel; FireWire; USB; Parallel port printers have been slowly phased out, and are now difficult to find for the most part, being considered as an obsolete legacy port on most ...

6. Direct cable connection - Wikipedia

   en.wikipedia.org/wiki/Direct_cable_connection

   A Direct Cable Connection dialog box on Windows 95. Direct Cable Connection (DCC) is a feature of Microsoft Windows that allows a computer to transfer and share files (or connected printers) with another computer, via a connection using either the serial port, parallel port or the infrared port of each computer.

7. Computer port (hardware) - Wikipedia

   en.wikipedia.org/wiki/Computer_port_(hardware)

   Blue or magenta: Parallel printer DB-25; Amber: Serial DB-25 or DB-9; Pastel pink: Microphone 1/8" stereo (TRS) minijack; Pastel green: Speaker 1/8" stereo (TRS) minijack; Additionally, USB ports are color-coded according to the specification and data transfer speed, e.g. USB 1.x and 2.x ports are usually white or black, and USB 3.0 ones are blue.