7段译码器 吉林大学短学期CPLD实习程序 通过四位拨码开关进行编码，让硬件电路将编码转换成对应的七段码，并将七段码送至数码管进行显示，其中该电路能够输出0到F的16个字符-7 decoder CPLD Jilin University internship program through short-term four DIP switch coded, so that hardware will be encoded into the corresponding seven-segmen