可以用于单片机的开发，PROTEL软件的元件库-Can be used for the development of SCM, PROTEL software component library

自制的protel元件封装，在原本库里没有的 ，免去了自己画图的烦恼。-Protel-made components package, not in the original library, eliminating the trouble of drawing their own.

Protel安装时生成的相应的元件库实在太少了！而且很多都不是国标的，这里都是自建的个人感觉常用的元件库，里面有使用说明-The Protel installation generated by the library is too small! And many are not the national standard, here are self-built personal feeling component library, there are instructions for use