2003年全国电子设计大赛课题分析，包括简易频率计，相位测量仪等。

内容是电子大赛历届题目方案分析及讲解，包阔设计方案，以及程序-The content analysis of e-competition program of the previous topics and briefings, the packet width design, and procedures

全国电子设计大赛常用的基本电路汇总，还包含对各个方向的分析，适合刚开始接触大赛的同学。里面有单片机最小模块设计、da/ad电路、电源电路、显示电路-National Electronic Design Contest common basic circuit summary also contains an analysis of all directions, just getting started with the contest for the students. Which has t