Altium Designer Summer 09 源文件：大量的实用电路图以及印制电路板-Altium Designer Summer 09 source files： a large number of practical circuit diagram and printed circuit boards

基于altium designer的pcb封装库，是自己制作的，略有粗糙-PCB package library Altium based on designer, is producing his own, slightly rough

根据元件的不同封装我们将其封装分为二大类：一类是分立元件的封装，一类是集成电路元 件的封装-According to the different elements of the package we will be packaged into two categories: one is discrete components of the package, one is packaged integrated circuit element