lesson 3_2.c

有51单片机C语言基础后在较短时间内学会51单片机C。

#include<reg52.h>
#define uint unsigned int
#define uchar unsigned int
void delay(uint);
uchar num;
sbit dula=P2^6;
sbit wela=P2^7;
uchar code table[]={
0x3f,0x06,0x5b,0x4f,
0x66,0x6d,0x7d,0x07,
0x7f,0x6f,0x77,0x7c,
0x39,0x5e,0x79,0x71}; //存在程序存储器  没有code则存储在随机存储器中
void main()
{
	wela=1;
	P0=0xc0;
	wela=0;
	while(1)
	{
		for(num=0;num<16;num++)
		{
			dula=1;
			P0=table[num];
			dula=0;
			delay(1000);
		}
			
	}
}

void delay(uint z)
{
	uint x,y;
	for(x=z;x>0;x--)
		for(y=110;y>0;y--);
}