USB, short for Universal Serial Bus, is an industry standard initially developed in the mid-1990s that defines the cables, connectors and communications protocols used in a bus for connection, communication, and power supply between computers and electronic devices.

In telecommunication, a communication protocol is a system of rules that allow two or more entities of a communications system to transmit information via any kind of variation of a physical quantity.

A computer is a device that can be instructed to carry out an arbitrary set of arithmetic or logical operations automatically.

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It is currently developed by the USB Implementers Forum.

The USB Implementers Forum is a not for profit organization created to promote and support the Universal Serial Bus.

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USB was designed to standardize the connection of computer peripherals to personal computers, both to communicate and to supply electric power.

A personal computer is a general-purpose computer whose size, capabilities, and price make it feasible for individual use.

A peripheral device is "an ancillary device used to put information into and get information out of the computer."

Electric power is the rate, per unit time, at which electrical energy is transferred by an electric circuit.


It has become commonplace on other devices, such as smartphones, PDAs and video game consoles.

A smartphone is a mobile phone with an advanced mobile operating system that combines features of a personal computer operating system with other features useful for mobile or handheld use.

A video game console is an electronic, digital or computer device that outputs a video signal or visual image to display a video game that one or more people can play.


USB has effectively replaced a variety of earlier interfaces, such as parallel ports, as well as separate power chargers for portable devices.

A battery charger, or recharger, is a device used to put energy into a secondary cell or rechargeable battery by forcing an electric current through it.

A parallel port is a type of interface found on computers for connecting peripherals.

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