It is a kind of cable bus which can process the communications between computer and peripheral equipments. USB is a general serial bus with PC standard.

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。

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Then this paper elaborates software and hardware design of the vehicle recorder system. System includes the GPS data collection, GPRS part, display and communications with PC etc.

然后本文详细论述了车载记录仪的硬件设计及软件的总体设计，主要包括GPS定位数据采集、GPRS模块的数据接收和发送、数据的显示及与PC机的通信等部分的设计。

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The system includes constant potential circuits, micro-current detection circuit, controller and its peripheral circuits as well as the communications with the PC.

该系统包括恒电位电路、微电流检测电路、控制器及其外围电路以及与上位机的通信。

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Communication has moved from the telephone landline to the mobile phone to Internet telephony with Skype to now apps like GroupMe with mobile communications services which do not rely on a PC or telephone number.

FORBES: Skype To Acquire GroupMe For Group Messaging