51單片機(jī)數(shù)碼管顯示實(shí)驗(yàn)報(bào)告

1、51單片機(jī)數(shù)碼管顯示實(shí)驗(yàn)實(shí)驗(yàn)內(nèi)容：）編寫(xiě)程序讓8只數(shù)碼管初始顯示0，每隔大約1s加1顯示(可以用延時(shí)函數(shù)實(shí)現(xiàn))，到數(shù)碼管顯示9后，再?gòu)?開(kāi)始顯示，如此循環(huán)反復(fù)。）C語(yǔ)言程序#include#defineuintunsignedintvoiddisplay();voidnum();inti;unsignedcharcodetable=0 xc0,0 xf9,0 xa4,0 xb0,0 x99,0 x92,0 x82,0 xf8,0 x80,0 x90,0 x88,0 x83,0 xc6,0 xa1,0 x86,0 x8e;/共陽(yáng)極數(shù)碼管0-F編碼表voiddelayms(uint);voidma

2、in()while(1)num();display();voiddisplay()P2=0 xff;/消隱P0連接段選，P1節(jié)位選P1=0 x00;/8個(gè)數(shù)碼管同時(shí)顯示P2=tablei;/數(shù)碼管顯示數(shù)碼0delayms(1000);/延時(shí)5msvoidnum()if(i9)i+;elsei=0;voiddelayms(uintx)uinti,j;for(i=0;ix;i+)for(j=0;j110;j+);3）匯編語(yǔ)言：ORG0000HLJMPMAINORG0100H;P2連接段選，P1節(jié)位選MAIN:MOVP1,#00H;所有的數(shù)碼管都顯示MOVR2,#00H;從0開(kāi)始顯示LOOP:MOV

3、A,R2為下面的基址加變址寄存器尋址方式做準(zhǔn)備MOVDPTR,#TAB1把數(shù)組的首地址賦給DPTRMOVCA,A+DPTR取數(shù)組中的數(shù)字MOVP2,A;把取得的值送給P0口顯示ACALLDELAY延時(shí)一會(huì)INCR2;為取下一個(gè)數(shù)加一CJNER2,#10,LOOP;只要數(shù)小于10就繼續(xù)循環(huán)顯示MOVR2,#00H如果加到10后重新從0開(kāi)始LJMPLOOP;進(jìn)入循環(huán)函數(shù);*TAB1:DB0C0H,0F9H,0A4H,0B0H,99H;數(shù)組DB92H,82H,0F8H,80H,90HRET;*DELAY:MOVR3,#3延時(shí)函數(shù)DE1:MOVR4,#0FFHDE2:MOVR5,#0FFHDJNZR5

4、,$DJNZR4,DE2DJNZR3,DE1RET;*END（3）編寫(xiě)程序?qū)W習(xí)數(shù)碼管動(dòng)顯，8只數(shù)碼管從從左往右示、2、3。C語(yǔ)言程序：#include#defineuintunsignedintunsignedcharcodetable=0 xc0,0 xf9,0 xa4,0 xb0,0 x99,0 x92,0 x82,0 xf8,0 x80,0 x90,0 x88,0 x83,0 xc6,0 xa1,0 x86,0 x8e;/共陽(yáng)極數(shù)碼管0-F編碼表voiddelayms(uintx);voidzuoyi();voidmain()inti;while(1)P1=0 xfe;for(i=0;i

5、8;i+)P2=tablei;delayms(3);zuoyi();voiddelayms(uintx)uinti,j;for(i=0;ix;i+)for(j=0;j110;j+);voidzuoyi()inta;a=P1;a=a1;P1=a;匯編語(yǔ)言：;數(shù)碼管動(dòng)態(tài)顯示ORG0000HLJMPMAINORG0100H;P0連接段選，P1節(jié)位選MAIN:MOVR2,#0從0開(kāi)始顯示MOVP1,#0FEHLOOP:MOVA,R2MOVDPTR,#TAB1MOVCA,A+DPTRMOVP2,AACALLDELAYINCR2MOVA,P1RLAMOVP1,ACJNER2,#8,LOOPMOVR2,#0AJMPLOOP;*TAB1:DB0C0H,0F9H,0A4H,0B0H,99H數(shù)組DB92H,82H,0F8H,80H,90HRET;*DELAY:MOVR3,#5H;延時(shí)函數(shù)DE1:MOVR4,#0FFHDJNZR4,$DJNZR3,DE1RET思考：（1）改變延時(shí)常數(shù)，使發(fā)光二極管閃亮?xí)r間改變。（2）（2）修改程序，使發(fā)光二極管閃亮移位方向改變。