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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.
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 new computers. Those who have printers and scanners with only parallel port may still be able to connect the devices via the use of USB adapters a.k.a. Parallel-to-USB cable, or use a PCI ...
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.
Xircom acquired Entrega, a small company that produced the USB upgrade boards (for people with older PCs lacking USB connectors) and converters (USB to serial, to parallel, to Ethernet). It turned these products into its own Port-Gear line, including special drivers to support USB in Windows NT v4 systems. [citation needed]
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.
This enabled JetDirect cards to connect to almost any printer, making that printer network-capable. In 1995, the Ex plus 3 was released, with 3 parallel ports on one network interface, allowing 3 printers to share 1 network address. 1997 saw the new numbering format for both internal and external JetDirect servers.