一個液晶顯示地?cái)?shù)字式電腦溫度計(jì)

1、實(shí)用文案一個液晶顯示的數(shù)字式電腦溫度計(jì)文章來源：遙控網(wǎng)液晶顯示器分很多種類，按顯示方式可分為段式，行點(diǎn)陣式和全點(diǎn)陣式。段式與數(shù)碼管類似，行點(diǎn)陣式一般是英文字符，全點(diǎn)陣式可顯示任何信息，如漢字、圖形、圖表等。這里我們介紹一種八段式四位LCD顯示器，該顯示器內(nèi)置驅(qū)動器，串行數(shù)據(jù)傳送，使用非常方便。原理圖如下圖：下圖是長沙太陽人科技開發(fā)有限公司生產(chǎn)的4位帶串行接口的液晶顯示模塊SMS0403的外部引線簡圖：標(biāo)準(zhǔn)文檔關(guān)該模塊的具體參數(shù)，請查看該公司網(wǎng)站。此例中使用的溫度傳感器為美國 DALLAS公司生產(chǎn)的單總線式數(shù)字溫度傳感器。該傳感器本站有其詳細(xì)的資料可 供下載。此例稍加改動，即可做成溫控器。本例介

2、紹一種用LED制作的電腦電子鐘（電腦萬年歷）。其制作完成裝潢后的照 片如下圖：點(diǎn)擊看大圖上圖中，年、月、日及時間選用的是 1.2寸共陽數(shù)碼管，星期選用的是 2.3 寸數(shù)碼管，溫度選用的是0.5寸數(shù)碼管，也可根據(jù)個人的愛好選用不同規(guī)格的數(shù) 碼管。原理圖如下圖所示：上圖中，CPU選用的是 AT89C2051,時鐘芯片選用的是 Dallas公司的DS1302, 溫度傳感器選用的是Dallas公司的數(shù)字溫度傳感器 DS1820 ,顯示驅(qū)動芯片選用 的是德州儀器公司的TPIC6B595,也可選用與其兼容的芯片 NC595或國產(chǎn)的 AMT9595。整個電子鐘用兩個鍵來調(diào)節(jié)時間和日期。一個是位選鍵，一個是數(shù)

3、字調(diào)節(jié)鍵。按一下位選鍵，頭兩位數(shù)字開始閃動，進(jìn)入設(shè)定調(diào)節(jié)狀態(tài)，此時按數(shù)字 調(diào)節(jié)鍵，當(dāng)前閃動位的數(shù)字就可改變。全部參數(shù)調(diào)節(jié)完后，五秒鐘內(nèi)沒有任何鍵 按下，則數(shù)字停止閃動，退出設(shè)定調(diào)節(jié)狀態(tài)。源程序清單如下(無溫度顯示程序)：start:do;$in clude(reg51.dcl)declare (sclk,io,rst) bit at (0b3h) register; /* p33,p34,p35 */declare (comma nd,data ,n ,temp1, num) byte;declare a(9) byte;declare ab(6) byte;declare aco(11) b

4、yte constant (0fdh,60h,0dah,0f2h,66h,0b6h,0beh,0e0h,0feh,0f6h,00h);declare week(11) byte constant (0edh,028h,0dch,7ch,39h,75h,0f5h, 2ch,0fdh,7dh,00h);declare da literally 'p15',clk literally 'p16',ale literally 'p17',mk literally 'p11',sk literally 'p12'clear:

5、procedure;sclk=0;io=0;rst=0;end clear;sen d1302:procedure(comm);declare (i,comm) byte;do i=0 to 7;comm=scr(comm,1);io=cy;call time(1);sclk=0;call time(1);sclk=1;end;end sen d1302;wbyt1:procedure(com,dat);/*字節(jié)寫過程 */declare (com,dat) byte;call clear;rst=1;call sen d1302(com);call send1302(dat);call cl

6、ear;end wbytl;wbyt8:procedure;/*時鐘多字節(jié)突發(fā)模式寫過程*/declare j byte;call clear;a(7)=A(6);a(6)=a(0);rst=1;call sen d1302(comma nd);do j=1 to 8;call sen d1302(a(j);end;call clear;end wbyt8;RBYT1:PR0CEDURE;DECLARE I BYTE;CALL CLEAR;RST=1;call sen d1302(0c1h);IO=1;DO 1=0 TO 7;SCLK=1;SCLK=0;CY=IO;N=SCR(N,1);END

7、;A(8)=N;CALL CLEAR;END RBYT1;sen d595:procedure; declare k byte;do k=0 to 7;data=scr(data,1);da=cy;clk=1;clk=0;end;end sen d595;sen d595_1:procedure; declare k byte;do k=0 to 7; data=scr(data,1);da1=cy;clk1=1;clk1=0;end;end sen d595_1;rb1:procedure(abc,j);DECLARE (I,j,abc) BYTE;CALL CLEAR;RST=1;call

8、 sen d1302(abc);10=1;DO I=0 TO 7;SCLK=1;SCLK=0;CY=IO;N=SCR(N,1);END;ab(j)=N;ab(j)=dec(ab(j);CALL CLEAR;end rb1;rbyt6:procedure;call rb1(0f1h,0);call rb1(0f3h,1);call rb1(0f5h,2);call rb1(0f7h,3);call rb1(0f9h,4);call rb1(0fbh,5);call rb1(0fdh,6);end rbyt6;wbyt6:procedure;call wbyt1(8eh,0); /* write

9、enable */call wbyt1(0f0h,ab(0);call wbyt1(0f2h,ab(1);call wbyt1(0f4h,ab(2);call wbyt1(0f6h,ab(3);call wbyt1(0f8h,ab(4);call wbyt1(0fah,ab(5);call wbyt1(0fch,ab(6);call wbyt1(8eh,80h); /* write disable */end wbyt6;rbyt8:procedure;/*時鐘多字節(jié)突發(fā)模式讀過程*/declare (i,j) byte;call clear;rst=1;call sen d1302(comm

10、a nd);io=1;do j=1 to 8;do i=0 to 7;sclk=1;call time(1);sclk=0;cy=io;n=scr( n,1);end;a(j)=n;end;call clear;a(0)=a (6);a (6)=A ；a(0)=a(0) and 0fh;if a(0)>6 then a(0)=0;CALL RBYT1;if (a(1)=0 and a(2)=0 and a(3)=0) thendo;do num=0 to 35;call time(250);end;temp1=1;end;if temp1=1 the ndo;temp1=0;ab(4)=

11、ab(4)+1;if ab >99h thendo;ab(4)=0;ab( 5)=ab(5)+1;if ab(5) >99h then ab( 5)=0;end;call wbyt6;end;end rbyt8;display:procedure; /*jieya,yima,fasong*/ declare (i,n,m) byte;n=a(0) and 0fh; /* send week */data=week (n);call sen d595;n=a(4); /* send date */n=n and Ofh;data=aco (n);call sen d595;n=a(4

12、);n=shr( n, 4);data=aco (n);call sen d595;do i=1 to 3; /* send sec ond,minu te,hour */n=a(i);n=n and 0fh;data=aco (n);call sen d595;n=a(i);n=shr( n, 4);data=aco (n);call sen d595;end;do i=5 to 6; /* send mon th,year */n=a(i);n=n and Ofh;data=aco (n);call sen d595;n=a(i);n=shr( n, 4);data=aco (n);cal

13、l sen d595;end;n=a(8); /* se nd 19 or 20 */n=n and Ofh;data=aco (n);call sen d595;n=a(8);n=shr( n, 4);data=aco (n);call sen d595;do m=0 to 5;n=ab(m);n=n and 0fh;data=aco (n);call sen d595_1;n=ab(m);n=shr( n, 4);data=aco (n);call sen d595_1;end;ale=O;ale=1;end display;beg in setprocedure;a(0)=06h;a(1

14、)=58h;a(2)=59h;a(3)=23h;a=30h;a (5)=06h;a (6)=97h;a (7)=00;a(8)=19h; /* set date/time (1997,7,1,8:00:00,week 3) */call wbyt1(8eh,0); /* write enable*/call wbyt1(80h,00h);/* start colock */call wbyt1(0beh,0abh);/*兩個二極管與8K電阻串聯(lián)充電*/comma nd=0beh; /* write colock/date */call wbyt8;call wbyt1(0c0h,a(8);ca

15、ll wbyt1(8eh,80h); /* set write protect bit */end beg in set;key:procedure;declare (i,time1,k1,tem) byte;call time(100);k1=7;time1=30;if mk=0 the ndo;do while time1>0; week: if k1=0 the n do;do i=0 to 5;/* call hz(a(0); */end;do i=0 to 3;/* call hz0; */end;end;tem=a(k1);if k1=7 then tem=a(8); a(k

16、1)=0aah;if k1=7 then a(8)=0aah; call display;call time(254);call time (254); a(k1)=tem;if k1=7 then a(8)=tem; call display;call time(254);call time(254);call time(254);time1=time1-1;if mk=O the ndo;call time(100); /*MOD KEY PROCESS*/TIME1=30;IF MK=0 THENDO;k1=k1-1;DO WHILE K1=0FFH;K1=7;END;END;end;I

17、F SK=0 THENDO;CALL TIME(100); /*SET KEY PROCESS*/TIME1=30;IF SK=0 THENDO;tem=tem+1;tem=dec(tem);DO CASE K1;DO WHILE tem=7;/*week*/tem=O;END;DO WHILE tem=60H;/*sco nd*/tem=0;END;DO WHILE tem=60H;/*mi nute*/ tem=0;END;DO WHILE tem=24H;/*hour*/tem=0;END;DO WHILE tem=32H;/*date*/tem=1;END;DO WHILE tem=13H;/*mo nth*/tem=1;END;DO while tem=100h; /* YEAR */tem=00;END;DO WHILE TEM>=21H;tem=19H;END;END;A(K1)=tem;if k仁7 then a(8)=tem;END;END;END;END;end key;main $program:mk=1;sk=1;temp1=0;