8位数码管显示时钟

本人依据 AT89C51 和 8 位数码管为素材 以最少的见实现 最多的功能 本程序开机流动显示学号可实现时钟 日历 定时闹钟 秒表等功能 C 程序 程序 include unsigned char led 12 0 x3f 0 x06 0 x5b 0 x4f 0 x66 0 x6d 0 x7d 0 x07 0 x7f 0 x6f 0 x40 0 x00 用 一维数组定义 9 横杠 全灭 unsigned char num 12 2 0 0 9 3 5 0 7 0 1 2 0 unsigned char a 8 unsigned char second 0 minute 0 hour 0 year 0 mon 1 day 1 day1 hsec sec m min m N temp1 unsigned char minute1 0 hour1 0 unsigned char b 8 0 xfe 0 xfd 0 xfb 0 xf7 0 xef 0 xdf 0 xbf 0 x7f 扫描 unsigned char k 0 unsigned int temp 记录毫秒为秒的变量 unsigned char M S flag M 是模式 更新时间的种模式加上正常模式 S flag 闪烁标志 sbit K0 P3 7 K0 是闹钟起停标志位 sbit K1 P3 0 sbit K2 P3 1 sbit K3 P3 2 sbit BEEP P3 3 void delay unsigned n 0 2 毫秒 int x y for x 0 x n x for y 0 y 24 y void init1 S flag 0 闪烁标志位 TMOD 0 x10 定时器以方式定时 TH1 0 xfc TL1 0 x18 EA 1 打开总中断 ET1 1 允许定时器中断 TR1 1 开启定时器 开始定时计数 void init0 TMOD 0 x01 定时器以方式定时 TH0 0 xff TL0 0 xff EA 1 打开总中断 ET0 1 允许定时器中断 TR0 0 关闭定时器 关闭定时计数 void display led 流动显示学号 int x char l a m for a 0 a 21 a x a 8 for l 0 l 6 l for m 0 m 0 else P1 led 11 delay 10 x x 8 void display 显示时钟及显示调节位 switch M case 0 a 0 led hour 10 a 1 led hour 10 a 2 led 10 a 3 led minute 10 a 4 led minute 10 a 5 led 10 a 6 led second 10 a 7 led second 10 break case 1 if S flag 1 a 0 led hour 10 a 1 led hour 10 else a 0 led 11 a 1 led 11 a 2 led 10 a 3 led minute 10 a 4 led minute 10 a 5 led 10 a 6 led second 10 a 7 led second 10 break case 2 a 0 led hour 10 a 1 led hour 10 a 2 led 10 if S flag 1 a 3 led minute 10 a 4 led minute 10 else a 3 led 11 a 4 led 11 a 5 led 10 a 6 led second 10 a 7 led second 10 break case 3 if S flag 1 a 0 led year 10 a 1 led year 10 else a 0 led 11 a 1 led 11 a 2 led 10 a 3 led mon 10 a 4 led mon 10 a 5 led 10 a 6 led day 10 a 7 led day 10 break case 4 a 0 led year 10 a 1 led year 10 a 2 led 10 if S flag 1 a 3 led mon 10 a 4 led mon 10 else a 3 led 11 a 4 led 11 a 5 led 10 a 6 led day 10 a 7 led day 10 break case 5 a 0 led year 10 a 1 led year 10 a 2 led 10 a 3 led mon 10 a 4 led mon 10 a 5 led 10 if S flag 1 a 6 led day 10 a 7 led day 10 else a 6 led 11 a 7 led 11 break case 6 if S flag 1 a 0 led hour1 10 a 1 led hour1 10 else a 0 led 11 a 1 led 11 a 2 led 10 a 3 led minute1 10 a 4 led minute1 10 a 5 led 10 a 6 led 11 a 7 led 11 break case 7 a 0 led hour1 10 a 1 led hour1 10 a 2 led 10 if S flag 1 a 3 led minute1 10 a 4 led minute1 10 else a 3 led 11 a 4 led 11 a 5 led 10 a 6 led 11 a 7 led 11 void key prc 时钟和闹钟调节 if K1 0 delay 10 延时去抖 if K1 0 按 K1 进行模式切换 M if M 8 M 0 while K1 等待按键释放 if M 0 switch M case 1 模式 调时 if K2 0 delay 10 延时去抖 if K2 0 加键按下 if hour 0 hour else hour 23 while K3 break case 2 模式 调分 if K2 0 delay 10 if K2 0 if minute0 minute else minute 59 while K3 break case 3 模式 调年 if K2 0 delay 10 if K2 0 if year0 year else year 99 while K3 break case 4 模式 调月 if K2 0 delay 10 if K2 0 if mon1 mon else mon 12 while K3 if year 4 0 闰年 2 月为 29 天 if year 4 0 非闰年 2 月为 28 天 if mon 4 mon 6 mon 9 mon 11 day1 30 if mon 1 mon 3 mon 5 mon 7 mon 8 mon 10 mon 12 day1 31 break case 5 模式 调日 if K2 0 delay 10 if K2 0 if day1 day else day day1 while K3 break case 6 模式 闹钟调时 if K2 0 delay 10 if K2 0 if hour10 hour1 else hour1 23 while K3 break case 7 模式 闹钟调分 if K2 0 delay 10 if K2 0 if minute10 minute1 else minute1 59 while K3 break void display rq 年月日显示 if K2 0 delay 10 if K2 0 a 0 led year 10 a 1 led year 10 a 2 led 10 a 3 led mon 10 a 4 led mon 10 a 5 led 10 a 6 led day 10 a 7 led day 10 while K2 等待按键释放 void key prc2 秒表模式转换 if M 0 if K3 0 delay 10 延时去抖 if K3 0 按 K3 进行模式切换 N if N 2 N 0 while K3 等待按键释放 void display sec 秒表显示 if N 1 a 0 led min m 10 a 1 led min m 10 a 2 led 10 a 3 led sec m 10 a 4 led sec m 10 a 5 led 10 a 6 led hsec 10 a 7 led hsec 10 if K2 0 delay 10 延时去抖 if K2 0 加键按下 TR0 TR0 while K2 等待按键释放 void res sec 秒表复位 if K1 0 delay 10 if K1 0 min m 0 sec m 0 hsec 0 M 0 while K1 void main 主程序 display led init0 init1 while 1 key prc key prc2 if N 1 display sec res sec else display rq display void time1 interrupt 3 定时器中断函数 if year 4 0 闰年 2 月为 29 天 if year 4 0 非闰年 2 月为 28 天 if mon 4 mon 6 mon 9 mon 11 day1 30 if mon 1 mon 3 mon 5 mon 7 mon 8 mon 10 mon 12 day1 31 TH1 0 xfc 定时 ms TL1 0 x18 temp if temp 1000 配合定时器定时 s temp 0 second if second 60 second 0 if minuteday1 day 1 mon if mon 12 mon 1 year if year 99 year 0 if hour1 hour if temp 250 0 每 ms S flag