What is USB ? (Universal Serial Bus)
Originally a standard for connecting PCs to peripherals
Defined by Intel, Microsoft, …
Intended to replace the large number of legacy ports in the PC
Single master (= Host) system with up to 127 peripherals
Simple plug and play; no need to open the PC
Standardized plugs, ports, cables
Has over 99% penetration on all new PCs
Adapting to new requirements for flexibility of Host function
– New Hardware/Software allows dynamic exchanging of Host/Slave
roles
– PC is no longer the only system Host. Can be a camera or a printer.