使用单片机独立按键实现加减

#include<reg51.h>

#include<intrins.h>

unsigned char code Led_code[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x67,0x80,0x40};

unsigned char code Bit_code[]={0xfe,0xfd,0xfb,0xf7,0xef,0xdf,0xbf,0x7f};

unsigned int add;

sbit K1=P0^0;

sbit K2=P0^1;

void delay(unsigned char i) //延时

{

delay(1000); //消抖

if(K1==0)add++;

}

void scan_sub(void)

{

delay(1000);

if((add>0)&(K2==0))add--;

}

void main()