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随着PC外设要求的提高,传统的外设规格存在着很多缺点,例如,系统资源分配问题,传输速率上的限制,接口类型不统一等等。因此指定一个统一且独立的规格是必然的趋势。USB就是满足这种需求的产品。 USB(Universal Serial Bus)的中文名称是通用串行总线,它是在1995年由Compaq、Intel、NEC、IBM、Microsoft、Northern Telecom等七家大厂商共同制定的(1995年11月定义了USB0.9版本的通用串行总线标准,随后又推出USB1.1版本,它是目前推出的支持USB的电脑和外设上普遍使用的标准,2000年推出了USB2.0版本。)。它提供了标准化的接口,用户使用方便,可以实现实时的数据传输,而且端口的扩展增大。USB同时又是一种通信协议,它支
With the increasing requirements of PC peripherals, the traditional peripherals have many shortcomings, such as system resource allocation, transmission rate limitations, inconsistent interface types, and so on. Therefore, the designation of a unified and independent specifications is an inevitable trend. USB is to meet this demand for the product. USB (Universal Serial Bus) Chinese name is Universal Serial Bus, which was in 1995 by Compaq, Intel, NEC, IBM, Microsoft, Northern Telecom and other seven major manufacturers jointly developed (November 1995 defined USB0. 9 version of the Universal Serial Bus standard, followed by the introduction of USB1.1 version, which is currently commonly used in USB-enabled computers and peripherals, and USB2.0 in 2000.) It provides a standardized interface, user-friendly, real-time data transfer can be achieved, and the expansion of the port. USB is also a communication protocol, it branch