That's a familiar view of computing, one deeply tied to the interface on the standard PC—after all, every program on your laptop or desktop hides much of its functionality under menus, too.
那是个很熟悉的、跟传统的个人电脑界面紧紧相联系的计算机视图。 毕竟，你的笔记本电脑或是台式机里的程序也是这样做的。
USB is a new PC interconnection protocol and has many advantages, It is a tendency that USB replaces the RS232 as computer and peripheral standard interface.
USB作为一种新的PC机互连协议，因其诸多优点，有逐渐取代RS 232串口，成为计算机和外设标准接口之趋势。
USB (Universal Serial bus) is a mainstream bus standard of PC peripheral interface, which extends its applications to industrial automatic instruments.
通用串行总线(usb)是目前PC外设接口的主流总线标准，并迅速在工业自动化仪器仪表中得到应用。
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