usb controller短语⁷¹⁶⁴⁰ 基本例句 USB控制器 Focusing on two typical cases-a computer management system and a field facility, we have developed two kinds of devices using the USB controller and PIC micro- controller. 同时针对连接计算机管理系统和现场设备的两种典型情况，说明以此模块为核心开发的两种通用的电力线载波通信模件设备。 cnki