代碼:
# include & ltreg52.h & gt
#定義uchar無符號字符
#定義uint無符號整數
sbit key 1 = p3^4;
P2^6杜拉sbit
sbit wela = p2^7;
uchar代碼表[]={
0x3f,0x06,0x5b,0x4f,
0x66、0x6d、0x7d、0x07、
0x7f、0x6f、0x77、0x7c、
0x39,0x5e,0x79,0x 71 };
uint編號;
烏恰白,石,葛,flag = 0,t0 = 0;
無效延遲(uchar z);
void顯示(void);
無效總管(無效)
{
num = 0;
P3 = 0x ff;
TMOD = 0x 01;
TH0 =(65536-10000)/256;
TL0 =(65536-10000)% 256;
EA = 1;
ET0 = 1;
TR0 = 1;
while(1) {
if(key1 == 0) {
延遲(5);
if(key1 == 0) {
flag = 1;
}
而(!key 1);
延遲(5);
而(!key 1);
}
顯示();
}
}
空顯示(空)
{
杜拉= 1;
P0 =表[編號/100];
杜拉= 0;
P0 = 0xff
wela = 1;
P0 = 0xfe
wela = 0;
延時(1);
杜拉= 1;
P0 =表[編號% 100/10];
杜拉= 0;
P0 = 0xff
wela = 1;
P0 = 0xfd
wela = 0;
延時(1);
杜拉= 1;
P0 =表格[編號% 10];
杜拉= 0;
P0 = 0xff
wela = 1;
P0 = 0xfb
wela = 0;
延時(1);
}
無效延遲(uchar z)
{
烏恰爾