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USB是Universal Serial Bus的简称。它是一种可以同时处理计算机与具有USB接口的多种外设之间通信的电缆总线,USB已成为目前PC标准的通用串行总线。一个基于计算机的USB系统可以在系统层次上被分为三个部分:即USB宿主(host)、USB设备(device)、USB连接(主要于USB2.0中涉及)。本文将分别对其进行叙述。
USB is short for Universal Serial Bus. It is a cable that handles both computer and multiple peripherals with a USB interface simultaneously. USB has become the current PC-standard universal serial bus. A computer-based USB system can be divided into three parts at the system level: a USB host, a USB device, and a USB connection (mainly referred to in USB 2.0). This article will be described separately.