USB资料大集合，包含USB入门系列资料，usb设计原理图，USB数据采集和控制系统的原理图和应用程序，USB 电路设计方案和开发板例程源码。-Large collection of USB data, including the series of USB data entry, usb design schematics, USB data acquisition and control system schematic diagram and applications, USB circu

以AT89C51单片机为核心，设计一个基于单片机的数据采集系统,采集16路模拟量.含有源代码，和原理图。-AT89C51 microcontroller as the core to design a microcontroller based data acquisition system, acquisition of 16 analog. Containing the source code, and schematic.