What is a parallel port?

Parallel port is a type of interface found on computers used to connect various peripheral hardware to the computer. When the line is connected to the parallel port, they are connected and able to communicate. The parallel port is characterized by two rows of small holes that receive rows of small pins on the cord, and on each port of the port there is usually a hole opening, so the cord can be securely attached to the computer. The port is often referred to as the printer port and sometimes as a Centronics port, from the Centronics 101 printer from 1970, which contained the first parallel interface for printers. Parallel ports are often identified in the computer system as "LPT1" and "LPT2". Despite the interface, manufacturers did not use a universal connector, so a number of parallel cables are. During this time, DC-37, 36-wheeled and 50-pin microbbon connectors and 25-pin card connectors were created to allow the use of a parallel interface.

Parallel ports have become popular because they were able to transmit data in parallel faster than standard at the time. Data sent via parallel connection moved eight bits at the same time, often via eight PIN connectors. These connectors were connected to a socket that is generally found on the back of the computer. Developers and manufacturers quickly adapted this technology to their own products, which has led to the introduction of many new printers and peripherals.

IBM released its version of a personal computer that contained a parallel connector that shared many similarities with the Centronics connector. Hewlett Packard followed another version. Although similar, there were differences in unions that made the development of peripherals more difficult because it was not the standard for this type of connector.

In 1994 it was solved when the institute of electrical and electronic engineers (IEEE) issued a set of standards thatThey somewhat unify technology in this industry. These IEEE standards have created a more uniform set of connection types. The standard is known as "IEEE 1284" and sets parameters that define two -way parallel communication between peripherals and computers.

with standardization of connection came more printers, zip units, scanners, external modems, web kamil, gamepads and joysticks that used a parallel interface. Developers produced adapters for the operation of SCSI equipment with parallel ports. The development of parallel communication has been developed by a universal serial bus (USB) and Ethernet interfaces and parallel port effectively replaced. Most computer manufacturers are considering a parallel port of comhistory of science of Puter and no longer contain a parallel interface.