![]() Other information is also sent, including: A set number of bytes (a unit of digital information) is transmitted with each packet. When a peripheral device is attached via USB, the host computer will detect what kind of device it is and automatically load a driver that allows the device to function.ĭata is transferred between the two devices in small amounts known as ‘packets’. This ultimately resulted in the development of USB. As the number of peripheral devices increased over the years, a new standardised means of transferring data between the main host and a range of devices was sought. ![]() A ‘bus’ within a PC is a collection of wires that transfer data between components inside the computer, or between the computer and its peripheral devices, much as an electronic busbar distributes power throughout certain large, power-hungry environments such as factories and data centres.īefore the launch of USB, each peripheral device was attached to a computer with its own individually shaped port. To most computer users, the system simply allows the use of various devices by attaching them via a USB port. ![]() USB is an industry standard, ‘user-friendly’ method of transferring data between a host device (such as a computer) and a peripheral device (for example, a mouse).
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