基于keil5模拟的单片机电子时钟设计

#include <AT89X51.h> #define uchar unsigned char #define uint unsigned int #define NUM P2 #define ADD P1 uint hour, minute, second; uchar COUNT; uchar buffer[6]; uchar Convert[] = { 0xc0, 0xf9, 0xa4, 0xb0, 0x99, 0x92, 0x82, 0xf8, 0x80, 0x90, }; void add_hour(){ hour++; if(hour==24){ hour=0; } } void add_minute(){ minute++; if(minute==60){ minute=0; add_hour(); } } void add_second(){ second++; if(second==60){ second=0; add_minute(); } } void con(uchar* buffer){ *buffer++= Convert[hour/10]; *buffer++= Convert[hour%10]-0x80; *buffer++= Convert[minute/10]; *buffer++= Convert[minute%10]-0x80; *buffer++= Convert[second/10]; *buffer++= Convert[second%10]; } void time0() interrupt 1 using 1{ TH0 = 0x3c; TL0 = 0xb0; COUNT++; if(COUNT==20){ COUNT = 0; add_second(); } } void add_m() interrupt 0 using 1{ add_minute(); } void add_h() interrupt 2 using 1{ add_hour(); } void delay_1ms(){ uint i; for(i = 0; i<200; i++); } void MCU_init(){ P1 = 0xff; P2 = 0xff; P3 = 0xff; TMOD = 0x01; TH0 = 0x3c; TL0 = 0xb0; EA = 1; ET0 = 1; EX0 = 1; EX1 = 1; IT0 = 1; IT1 = 1; TR0 = 1; } void numDisplay(uchar* buffer){ uchar temp = 0x01; uint i; for(i = 0; i< 6; i++){ ADD = temp; temp<<=1; NUM = *buffer++; delay_1ms(); } } void main(){ MCU_init(); while(1){ con(buffer); numDisplay(buffer); } }