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USB(Universal Serial Bus)又称通用串行总线,是计算机又一个标准接口,它不但传输速率快(传输率可达12Mb/s,比串口快100倍,比并口快十几倍),而且支持热拔插,可同时配接多达127个设备,并提供5V的低压电源,因此一些新设备不需配备专门的交流电源,使用非常方便。 日前我单位购买了一台HP外置式CD-RW刻录机。我想,这下可以将我计算机上那些庞大的图形文件做一备份了,可一看接口就傻了眼,该刻录机
USB (Universal Serial Bus), also known as universal serial bus, is another standard interface of the computer. It not only has the high transmission speed (transmission rate up to 12Mb / s, 100 times faster than serial port, more than ten times faster than parallel port) Hot-swappable, with up to 127 devices can be coupled at the same time and provide low-voltage 5V power supply, so some new equipment does not require a dedicated AC power supply, the use of very convenient. Recently I purchased an HP external CD-RW burner. I think this time under my computer can make a huge backup of the graphics file, you can look at the interface on the foolhardy, the recorder