#include<reg52.h> //用于單片機（C51）開發的一種c語言的頭文件。
#define uint unsigned int
sbit a1=P2^6;
sbit a2=P2^7;
uint k=0;
uint code dat[ ]={0x3f,0x06,0x5b,0x4f,0x66,0x6d, 0x7d,0x07,0x7f,0x6f };
void delay() {
uint i;
for(i=2000;i>0;i--);
}
Void main() {
EA=1;
EX0=1;
IT0=1;
IT1=1;
While(1) {
P0=0;
P0=dat[k/10];
a2=1;
a1=0;
delay();
P0=0;
P0=dat[k%10];
a1=1;
a2=0;
delay();
}
}
Void jiashu() interrupt 0 {
If(k<99)
k=k+1;
else
k=0;
}
Void jiashu() interrupt 2 {
If(k>0)
k=k-1;
else
k=99;
}
|
