?? main.c
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// Khai bao cac file header
#include <AT89X52.H>
#include <Kit8051.h>
// Khai bao cac bien toan cuc
unsigned char code LED_code[] = {Number0,
Number1,
Number2,
Number3,
Number4,
Number5,
Number6,
Number7,
Number8,
Number9};
// Khai bao cac ham
void Delay(unsigned int n);
void InitSystem(void);
void Display(unsigned char digit1,
unsigned char digit2,
unsigned char digit3,
unsigned char digit4);
// Dinh nghia cac ham
void Delay(unsigned int n)
{
unsigned int i,j;
for(i=0;i<n;i++)
for(j=0;j<100;j++);
}
void Display(unsigned char digit1,
unsigned char digit2,
unsigned char digit3,
unsigned char digit4)
{
// Hien thi so thu nhat
LED = LED_code[digit1];
K1 = 0;
Delay(1);
K1 = 1;
// Hien thi so thu hai
LED = LED_code[digit2];
K2 = 0;
Delay(1);
K2 = 1;
// Hien thi so thu ba
LED = LED_code[digit3];
K3 = 0;
Delay(1);
K3 = 1;
// Hien thi so thu tu
LED = LED_code[digit4];
K4 = 0;
Delay(1);
K4 = 1;
}
void InitSystem(void)
{
LCD_E = 0;
}
// Chuong trinh chinh
void main(void)
{
// Khoi tao he thong
InitSystem();
// Vong lap vo tan
while(1)
{
Delay(10);
Display(1,2,3,4);
}
}
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