这是基于PROTEL 99SE绘制的PCB板，也是我为全国大学生电子设计竞赛校队画的核心板，本板基于ATmega64单片机和CPLD器件EPM3256，在去年的电子设计校队中使用。-This is based on PROTEL 99SE drawn PCB, also my National Undergraduate Electronic Design Contest for the school team' s core drawing board, the board based