1、基于STC89C52單片機時鐘1.1602顯示。第一行顯示年月日，第二行顯示時分秒。2.開機顯示個性的畫面，約5S后進入時間顯示界面。3.漢字顯示“年”“月”“日”。4.時間可調。時間調節由三按鍵控制。鍵一控制調節位，按下鍵一后，時鐘停止走時，出現光標，每按一次光標移向下一個調節位，按五次后，退出調節模式。鍵二為加鍵，鍵三為減鍵。只有在模式調節下才起作用。5.該時鐘程序僅僅只是時鐘功能的實現，走時并不精確。或者說是參考模型，可以在此基礎上進行優化和更改。按鍵部分可進行大優化，為了在實驗板上做實驗，而實驗板為矩陣鍵盤。所以按鍵定義了四個端口。#include #include #define u

2、char unsigned char#define uint unsigned intsbit LCD_RS=P10;/ 定義寄存器選擇sbit LCD_RW=P11;/ 定義讀寫信號線sbit LCD_EN=P12;/ 定義定義使能端sbit key1=P00;sbit key2=P04;sbit key3=P05;sbit key4=P06;void delay_ms(uint xms); /延時函數聲明bit lcd_busy();/忙檢查函數聲明void lcd_wcmd(uchar cmd);/寫指令寄存器IR函數聲明void lcd_wdat(uchar dat);/寫數據寄存器D

3、R函數聲明void lcd_clr(); / 清屏函數聲明void lcd_init(); / LCD初始化函數聲明void key_mode();void year_moon_day();uchar dis_buf19;uchar dis=0,1,2,3,4,5,6,7,8,9;uchar code name1=help yourself!;uchar code name2=hold on!;ucharyear_month_day38=0 x04,0 x0f,0 x12,0 x0f,0 x0a,0 x1f,0 x02,0,/年0 x0f,0 x09,0 x0f,0 x09,0 x0f,0 x

4、09,0 x13,0 x00,/月0 x0e,0 x0a,0 x0a,0 x0e,0 x0a,0 x0a,0 x0e,0 x02 /日;uchar dingshi=0;/50ms計數uchar flag=0;/按鍵控制變量char miao=55,fen=59,shi=23;char moon=12,day=31;int year=2012;uchar leap;uchar shan;/控制時分的閃爍位uchar key_value;/*LCD顯示部分*/讀忙bit lcd_busy()bit result;LCD_RS=0;LCD_RW=1;LCD_EN=1;_nop_();_nop_();

5、_nop_();_nop_();result=(bit)(P2&0 x80);LCD_EN=0;return result;/清屏void lcd_clr()lcd_wcmd(0 x01);delay_ms(5);/寫指令void lcd_wcmd(uchar cmd)while(lcd_busy();/delay_ms(2);LCD_RS=0;LCD_RW=0;LCD_EN=0;_nop_();_nop_();P2=cmd;_nop_();_nop_();_nop_();_nop_();LCD_EN=1;_nop_();_nop_();_nop_();_nop_();LCD_EN=0;/寫數

6、據void lcd_wdat(uchar dat)while(lcd_busy();/delay_ms(2);LCD_RS=1;LCD_RW=0;LCD_EN=0;_nop_();_nop_();P2=dat;_nop_();_nop_();_nop_();_nop_();LCD_EN=1;_nop_();_nop_();_nop_();_nop_();LCD_EN=0;/顯示初始化void lcd_init()/delay_ms(15);lcd_wcmd(0 x38); /顯示模式為16*2 5*7點陣 8位數據delay_ms(5);lcd_wcmd(0 x38);delay_ms(5);

7、lcd_wcmd(0 x01); /清屏delay_ms(5);lcd_wcmd(0 x06); /移動光標delay_ms(5);lcd_wcmd(0 x0c); /開光標delay_ms(5);void delay_ms(uint xms)uchar i,j;for(i=xms;i0;i-)for(j=110;j0;j-);void lcd_conv(uchar shi,fen,miao)dis_buf0=disshi/10;dis_buf1=disshi%10;dis_buf2=0 x3a;dis_buf3=disfen/10;dis_buf4=disfen%10;dis_buf5=0

8、x3a;dis_buf6=dismiao/10;dis_buf7=dismiao%10;void lcd_conv_year(uint year,uchar moon,day)dis_buf8=disyear/1000;dis_buf9=dis(year%1000)/100;dis_buf10=dis(year%100)/10;dis_buf11=disyear%10;dis_buf12=1;dis_buf13=dismoon/10;dis_buf14=dismoon%10;dis_buf15=2;dis_buf16=disday/10;dis_buf17=disday%10;dis_buf1

9、8=3;void lcd_dis()uchar i;lcd_conv(shi,fen,miao);lcd_conv_year(year,moon,day);lcd_wcmd(0 x00|0 x80);for(i=8;i19;i+)lcd_wdat(dis_bufi);lcd_wcmd(0 x40|0 x80);for(i=0;i8;i+)lcd_wdat(dis_bufi);/自定義字符圖形void lcd_wCGROM()/將漢字寫入CGROM uchar i,j;for(i=1;i4;i+)for(j=0;j5)flag=0;lcd_wcmd(0 x0c); /關光標delay_ms(1)

10、;TR0=1; if(key3=0)key_value=2; if(key4=0)key_value=3;while(key2=0|key3=0|key4=0); void keyprocess()switch(flag)case 1:if(key_value=2)shi+;if(shi23)shi=0;lcd_dis();lcd_wcmd(0 xc0+1);delay_ms(1);if(key_value=3)shi-;if(shi59)fen=0;lcd_dis();lcd_wcmd(0 xc0+4);delay_ms(1);if(key_value=3)fen-;if(fen9999)y

11、ear=2000;lcd_dis();lcd_wcmd(0 x80+3);delay_ms(1);if(key_value=3)year-;if(year12)moon=1;lcd_dis();lcd_wcmd(0 x80+6);delay_ms(1);if(key_value=3)moon-;if(moon29)day=1;if(moon=2&(year-2000)%4!=0)&day28)day=1;if(moon=1|moon=3|moon=5|moon=7|moon=8|moon=10|moon=12)&day31)day=1;if(moon=4|moon=6|moon=9|moon=

12、11)&day30)day=1;lcd_dis();lcd_wcmd(0 x80+9);delay_ms(1);if(key_value=3)day-;if(moon=2&(year-2000)%4=0)&day1)day=29;if(moon=2&(year-2000)%4!=0)&day1)day=28;if(moon=1|moon=3|moon=5|moon=7|moon=8|moon=10|moon=12)&day1)day=31;if(moon=4|moon=6|moon=9|moon=11)&day20)miao+; dingshi=0;if(miao59)miao=0;fen+;

13、if(fen59)fen=0;shi+;if(shi23)shi=0;year_moon_day();/年月日void year_moon_day()day+;if(year-2000)%4=0)leap=1;elseleap=0;if(day28) switch(moon) case 1:if(day31)day=1;break; case 2:if(leap=1) if(day29)day=1;moon+; else day=1;moon+; break; case 3:if(day31)day=1;moon+;break; case 4:if(day30)day=1;moon+;brea

14、k; case 5:if(day31)day=1;moon+;break; case 6:if(day30)day=1;moon+;break; case 7:if(day31)day=1;moon+;break; case 8:if(day31)day=1;moon+;break; case 9:if(day30)day=1;moon+;break; case 10:if(day31)day=1;moon+;break; case 11:if(day30)day=1;moon+;break; case 12:if(day31)day=1;moon+;break; if(moon12) moon=1; year+; if(year9999) year=2000; void display()/開機個性化顯示uchar i;lcd_wcmd(0 x00|0 x80);i=0;while(i14)lcd_wdat(name1i);i+;lcd_wcmd(0 x40|0 x80);i=0;while(i8)lcd_wdat(name2i);i+;void main()