单片机外部中断控制数码管电子时钟。答:数码管用8位一体的,共阴的。仿真图如下 程序如下 include<reg51.h> define uchar unsigned char define uint unsigned int sbit k1=P3^1; //第一个按键,选择设置 uchar code distab[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f,0x40};//共阴数码管段码表 uchar dis...
51单片机和数码管做时钟为什么点不显示答:char code SEG8[]={0x50,0x5F,0x94,0x15,0x1B,0x31,0x30,0x57,0x10,0x11,0x40,0x4F,0x84,0x05,0x0B,0x21,0x20,0x47,0x00,0x01,0x1a,0xf8,0xff,0xbf}; //0~9+0.~9.+H+L+暗- 显示小数点,需要单独的编码,上面的编码是共阳数码管0——9和0.——9.和字母H、L;...