洛阳理工学院实验报告
源程序
#include
#define uchar unsigned char
#define uint unsigned int
uchar code LEDData[]= {0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07, 0x7f,0x6f};
sbit OE=P2^7;
sbit EOC=P2^6;
sbit START=P2^5;
sbit CLK=P2^4;
sbit ALE=P2^5;
void Delay(uint count)
{
uchar i;
while(count--)
for(i=0;i<120;i++);
}
void Display_Result(uchar num)
{
num=num*5/255;
P2 = 0xf7; //FB=1111 0111
P0 = LEDData[num%10];
Delay(5);
P2 = 0xfb;
P0 = LEDData[num%100/10];
Delay(5);
P2 = 0xfd;
P0 = LEDData[num/100];
Delay(5);
}
void main(void)
{
TMOD = 0x02;
TH0 = 206;
TL0 = 206;
TR0=1;
EA=1;
ET0=1;
ALE=0;
ALE=1;
while(1)
{
START = 0;
START= 1;
START = 0;
while(EOC==0);
OE = 1;
Display_Result(P1);
OE = 0;
}
}
void Timer0_INT() interrupt 1
{
CLK = !CLK; }
