51单片机入门之不同按键实现数码管显示0到20程序 -

标题: 51单片机入门之不同按键实现数码管显示0到20程序 [打印本页]

作者: 剪云者 时间: 2019-2-19 16:48
标题: 51单片机入门之不同按键实现数码管显示0到20程序
可以通过不同按键实现数码管显示0到20这些数，两个数码管一个代表各位，一个代表十位
#include <reg51.h>
#define uchar unsigned char
sbit K1=P2^0;
sbit K2=P2^1;
sbit K3=P2^2;
sbit K4=P2^3;
uchar code F[]={0x3F,0x06,0x5B,0x4F,0x66,0x6D,0x7D,0x07,0x7F,0x6F,0x3F,0x06,0x5B,0x4F,0x66,0x6D};
uchar code S[]={0x3F,0x3F,0x3F,0x3F,0x3F,0x3F,0x3F,0x3F,0x3F,0x3F,0x06,0x06,0x06,0x06,0x06,0x06};

void main()
{
while(1)
{

  uchar b,fir,sec,third,forth;
  fir=K1;
  sec=K2;
  third=K3;
  forth=K4;
  b=fir*8+sec*4+third*2+forth*1;
  P0=F[15-b];
  P1=S[15-b];
}

TIM截图20190219164510.png (32.69 KB, 下载次数: 51)

作者: jll586 时间: 2019-3-3 23:01
这个显示的是0-19

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