The USB Specification was proposed by Intel, Compaq, Microsoft and other companies in 1994, its emergence simplified the connection between PC and PC peripherals, and made PC interface extension to become more easier.

• USB是由Intel，Compaq，Microsoft等七家著名的计算机和通信公司于1994年推出的通用串行总线，它的出现大大简化了PC机和外设的连接过程，使PC机接口的扩展变得更加容易。