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. The parallel port interface was originally known as the Parallel Printer Adapter on IBM PC-compatible computers.
USB TO PARALLEL PRINTER CABLE FOR MAC SERIAL
Today, the parallel port interface is virtually non-existent because of the rise of Universal Serial Bus (USB) devices, along with network printing using Ethernet and Wi-Fi connected printers. It was an industry de facto standard for many years, and was finally standardized as IEEE 1284 in the late 1990s, which defined the Enhanced Parallel Port (EPP) and Extended Capability Port (ECP) bi-directional versions. There are many types of parallel ports, but the term has become most closely associated with the printer port or Centronics port found on most personal computers from the 1970s through the 2000s. To do this, parallel ports require multiple data lines in their cables and port connectors and tend to be larger than contemporary serial ports, which only require one data line.
The name refers to the way the data is sent parallel ports send multiple bits of data at once ( parallel communication), as opposed to serial communication, in which bits are sent one at a time.
In computing, a parallel port was a type of interface found on computers ( personal and otherwise) for connecting peripherals. The Apple II Parallel Printer Port connected to the printer via a folded ribbon cable one end connected to the connector at the top of the card, and the other end had a 36-pin Centronics connector.
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