#include <reg52.h>
#define uchar unsigned char
#define uint unsigned int
uchar code table[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f,0x77,0x7c,0x39,0x5e,0x79,0x71};
sbit duan=P2^6;
sbit wei=P2^7;
void delay(uint z);
void main()
{
duan=1;
P0=0x00;
duan=0;
uchar num;
while(1)
{
for(num=0;num<15;num++)
{
wei=1;
P0=table[num];
wei=0;
delay(1000);
}
}
}
void delay(uint z)
{
uint x,y;
for(z=x;x>0;x--)
for(y=110;y>0;y--);
}
uchar 放在這兒就不行，放在sbit duan=P2^7;下一行或放在 duan=1;上一行就可以,這是為什么呀？
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