源代码：
/* * _3.c * * Created: 2011-4-5 11:34:29 * Author: xmphoenix.fish */
#include <avr/io.h> #include<util/delay.h> #define F_CPU 8000000UL
const unsigned char table[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f}; unsigned char buff[3]={0,0,0};
int main(void) { unsigned char i,data; DDRB = 0x00;PORTB = 0xFF; DDRF = 0xff;PORTF = 0x00; DDRE = 0xff;PORTE = 0x00; while(1) { data = PINB; buff[0] = data/100; buff[1] = data/10; buff[2] = data; for (i=0;i<3;i++) { PORTE = ~_BV(i+1);//关键的两句表达式 PORTF = table[buff[i]]; _delay_ms(10); } } }
截图：
转载于:https://www.cnblogs.com/xmphoenix/archive/2011/04/05/2006096.html
相关资源：avr studio 4