at89c2051的6位led电子钟(计数器)（AT89C2051 6 bit LED electronic clock (counter)）.docVIP

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at89c2051的6位led电子钟(计数器)（AT89C2051 6 bit LED electronic clock (counter)）.doc

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at89c2051的6位led电子钟(计数器)（AT89C2051 6 bit LED electronic clock (counter)）

at89c2051的6位led电子钟(计数器)（AT89C2051 6 bit LED electronic clock (counter)） # include code tendon _ seg [10] = {0x81,0xe7,0x92,0xa2,0xe4,0xa8,0x88,0xe3,0x80,0xa0}; / / p1.7 (冒号) 口高电平 bit key1 _ enter = 0, key2 _ enter = 0, key3 _ enter = 0, countdown _ mark = 0, stopwatch _ mark = 0, count _ mark = 0, bell _ mark = 0; / / 状态标志 unsigned char programme = 0, program _ variable = 0, count _ bit = 0, count = 0; unsigned char hour = 10 minute = 10, second = 0; / / 时间变量 unsigned char delayed _ hour = 22, delayed _ minute = 10, delayed _ second = 0; / / 定时变量 unsigned char count _ hour = 0, count _ minute = 0, count _ second = 0; / / 计时计数变量 unsigned int count _ hour = 0, count _ count = 0; void delay (unsigned int t) / / 延时子程序 { unsigned int i, j; for (i = 0; ifor (j = 0, j 10; j + +) ; } void time0 _ practice (void) {/ / 定时计数0器初始化 ea = 0; tr0 = 0; tmod = 0x02; th0 = 0x4; tl0 = 0x4; et0 = 1; tr0 = 1; ea = 1; } static void timer0 _ isr (void) to interrupt tf0 _ vector using 1 / / 定时计数0器中断函数 { count _ hour + +; / / 时钟计时程序 if (count _ hour = 4020) { count _ hour = 0; second + +; if (second = 60) { second = 0; minute + +; if (minute = 60) { minute = 0; hour + +; if (hour = 24) hour = 0; } } } if (delayed _ hour = = hour minute delayed _ = = minute second 4) p3 _ 7 = 0; else p3 _ 7 = 1; if (countdown _ mark = = 1) {/ / 倒计时程序 count _ count + +; if (count _ count = 4000 (count _ second! = 0 | count _ minute! = 0 | count _ hour! = 0)) { count _ count = 0; count _ second; if (count _ second = 60) { count _ second = 59; count _ minute - -; if (count _ minute = 60) { count _ minute = 59; count _ hour; if (count _ hour = 100) count _ hour = 99; } } } if (count _ second = = 0 count _ minute = = 0 count _ hour = = 0 count _ count = 12000) p3 _ 7 = 0; else p3 _ 7 = 1; if (count _ count = 15000) count _ count = 14000; } if (stopwatch _ mark = = 1) {/ / 秒表程序 count _ count + +; if (count _ count = 40) { count _ count = 0; count _ second + +; if (count _ second = 100) { cou