MAX7219+DS1302+74LS245数字钟,内附PROTEUS图！实物以通过-MAX7219+ DS1302+74 LS245 digital clock, enclosing PROTEUS map! In-kind through

使用P1.0，P1.1作为74164串行输入数据线和时钟线，74164的输出接数码管的段码，P1.2接一位数码管的位选码，在一位数码管上轮流显示数字0~F。-Use P1.0, P1.1 as 74,164 serial input data and clock lines, 74,164 digital output segment access code, P1.2 bit then choose a digital code, in turn displayed on a digital