Question

编程实现甲乙两个单片机进行点对点通信，甲机每隔1秒发送一次数字（0—9），乙机接收到以后，在数码管

Answer 1

#include<reg51.h>
#define uchar unsigned char
uchar time=0,dat=0;
void t0isr() interrupt 1
{
TH0=(65536-50000)/256;
TL0=(65536-50000)%256;
time++;
if(time>=20)
    {
    time=0;
    SBUF=dat;
    dat++;
    dat%=10;
    }
}
main()
{
TMOD=0x21;
TH0=(65536-50000)/256;
TL0=(65536-50000)%256;
TH1=0xfd;
TL1=0xfd;
TR0=1;
TR1=1;
ET0=1;
EA=1;
while(1);
}


#include<reg51.h>
#define uchar unsigned char
uchar table[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f};
main()
{
TMOD=0x20;
TH1=0xfd;
TL1=0xfd;
TR1=1;
ET0=1;while(1)
    {
    while(RI==0);
    RI=0;
    P1=table[SBUF];
    }
}