51单片机4*4矩阵键盘源程序及仿真

51C源程序和仿真文件 #include unsigned char a[17]={ 0xc0,0xF9,0xA4,0xB0,0x99, 0x92,0x82,0xF8,0x80,0x90, 0x88,0x83,0xC6,0xA1,0x86, 0x8E,0xff},b[4],c=0x01; unsigned int jianzhi; void Delay1ms(unsigned int count) { unsigned int i,j; for(i=0;i (P3_3==0) hengzhi=3; ...展开详情收缩