Universal Serial Bus (USB)

The Universal Serial Bus (USB) is a relatively new technology that is designed to resolve all of the issues related to connecting peripheral devices to a workstation.

It eliminates the need to open computer case for installing cards needed for certain devices, and designed to meet Microsoft Plug and Play (PnP) specification.

USB also allows 127 devices to run at the same time on the bus using only one interrupt, it has dual-speed data transfer, 1.5Mbps and 12Mbps, and can provide limited power, (maximum 500mA of current) to devices attached on the bus.