4.c

来自「上传一些」· C语言 代码 · 共 45 行

#include<reg52.h>
#define uchar unsigned char 
uchar t,flag,flag1;
sbit beep=P2^3;
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};
void main()
		{
			P0=0x80;
			wela=1;
			wela=0;
			dula=1;
			TMOD=0x01;
			EA=1;
			ET0=1;
			TH0=0x4c;
			TL0=0x00;
			TR0=1;
			while(1)
				{
					if(flag1==1)
						{
							flag1=0;
							P0=table[t];
							t++;
							if(t==16) t=0;
						}
				}
			
		}
void gh() interrupt 1 using 1
		{
			TH0=0x4c;
			TL0=0x00;
			flag++;
			if(flag==20)
					{
							flag=0;
							flag1=1;
					}
		
		}