74ls164動(dòng)態(tài)驅(qū)動(dòng)多位數(shù)碼管

74ls164可否動(dòng)向驅(qū)動(dòng)多位數(shù)碼管voiddisplay( )//數(shù)碼顯示{SCON=0;//初始化串行口方式SBUF=dispcode[ge];while(!TI);TI=0;led4=0;delay(2);led4=1;SBUF=dispcode[shi];while(!TI);TI=0;led3=0;delay(2);led3=1;SBUF=dispcode[bai];while(!TI);TI=0;led2=0;delay(2);led2=1;SBUF=dispcode[qian];while(!TI);TI=0;led1=0;delay(2);led1=1;SBUF=dispcode[wan];while(!TI);TI=0;led0=0;delay(2);led0=1;}74ls164數(shù)碼管驅(qū)動(dòng)（第二個(gè)程序）#defineclockPORTD.1#definedatePORTD.0#defineclock_enDDRD.1#definedate_enDDRD.0unsignedcharlab[2][10]={0x03,0x9F,0x25,0x0D,0x99,0x49,0x41,0x1F,0x01,0x09,0x02,0x9E,0x24,0x0C,0x98,0x48,0x40,0x1E,0x00,0x08};voidsend(unsignedcharw){unsignedchari;for(i=0;i<8;i++){clock=0;date=w&1;clock=1;w=w>>1;}return;}voidxianshi(longw,unsignedcharweishu){unsignedchari,j;bitflag=0;clock_en=1;date_en=1;if(w<0){flag=1;

w=-w;

}for(i=0;i<8;i++)

//8

次循環(huán){if(w!=0){if(i!=weishu){j=lab[0][w%10];}else{j=lab[1][w%10];}}if(w==0){

if(i==0)j=0x03

;

//當(dāng)數(shù)值直接是

0if(i<=weishu){if(i<weishu)j=0x03;if(i==weishu)j=0x02;}else{if(flag)

j=0xdf;

//show

負(fù)號(hào)else

{if(i!=0)j=0xff;}//oxff

就不顯示flag=0;}}send(j);w=w/10;//每顯示一位，除10}return;}51單片機(jī)接74ls164驅(qū)動(dòng)數(shù)碼管的C程序#include<regx52.h>sbitsclk=P2^0;sbitsda=P2^1;sbitslck=P2^2;inttab[10]={0x3F,0x06,0x5B,0x4F,0x66,0x6D,0x7D,0x07,0x7F,0x6F};voiddelay( ){inti,j;for(i=0;i<255;i++)for(j=0;j<80;j++);}voidbit_dat(biti){sclk=0;sda=i;sclk=1;}voiddat(chari){slck=0;bit_dat((bit)(tab[i]&0x80));bit_dat((bit)(tab[i]&0x40));bit_dat((bit)(tab[i]&0x20));bit_dat((bit)(tab[i]&0x10));bit_dat((bit)(tab[i]&0x08));bit_dat((bit)(tab[i]&0x04));bit_dat((bit)(tab[i]&0x02));bit_dat((bit)(tab[i]&0x01));slck=1;}main( ){inti;while(1){for(i=0;i<10;i++){dat(i);delay( );}i=0;}}程序以下:/**************************************//*74LS164數(shù)碼管動(dòng)向顯示*//**************************************///-------------------------------------

庫函數(shù)申明，管腳定義

------------#include<at89x51.h>#defineucharunsignedcharsbitsimuseri_CLK=P1^1;sbitsimuseri_DATA=P1^0;

//用//用

P1^1P1^0

模擬串口時(shí)鐘模擬串口數(shù)據(jù)sbita0=ACC^0;unsignedcharcodedis_code[11]={0x28,0x7E,0xa2,0x62,//查表顯示0,1、、90x74,0x61,0x21,0x7A,0x20,0x60,0x01};ucharnumer,temp;ucharge,shi;//----------------------------------------------------------------------------函數(shù)名稱：out_simuseri輸入?yún)?shù)：data_buf輸出參數(shù)：無//功能說明：8位同步移位存放器，將data_buf的數(shù)據(jù)逐位輸出到//----------------------------------------------------------------------------

simuseri_DATAvoidout_simuseri(uchardata_buf){uchari;i=8;ACC=data_buf;do{simuseri_CLK=0;simuseri_DATA=a0;simuseri_CLK=1;ACC=ACC>>1;}while(--i!=0);}/************************************/voiddelay(ucharms){uchari;while(ms--){for(i=0;i<125;i++);}}

//延時(shí)程序/***********************************/voidmain( ){ucharm;while(1){for(temp=0;temp<99;temp++){ge=temp/10;shi=temp%10;for(m=0;m<20;m++)//顯示頻次200ms加1次{P2_0=0;//位段碼numer=dis_code[ge];out_simuseri(numer);//個(gè)位移位顯示delay(5);P2_0=1;P2_1=0;numer=dis_code[shi];//十位移位out_simuseri(numer);delay(5);P2_1=1;}m=0;}}}/****************************************/*******************************************************************************第二個(gè)程序74HC164是個(gè)移位存放器，以下程序是我用過的，絕對(duì)沒問題：此中ShowData為164數(shù)據(jù)腳，ShowClck為164時(shí)鐘腳；voidShow_164(unsignedchar_ShowValue){unsignedcharCount0;for(Count0=0;Count0<=7;Count0++){if((_ShowValue&0x80)==0x80)ShowData=1;elseShowData=0;_ShowValue<<=1;ShowClck=0;_nop_( );_nop_( );ShowClck=1;}}鑒于51單片機(jī)的簡略數(shù)字頻次計(jì)要求使用準(zhǔn)時(shí)/計(jì)數(shù)器1作準(zhǔn)時(shí)用，準(zhǔn)時(shí)1s；準(zhǔn)時(shí)/計(jì)數(shù)器0作計(jì)數(shù)器用，被計(jì)數(shù)的外面脈沖從P3.4（T0）接入。單片機(jī)將在1s內(nèi)對(duì)脈沖計(jì)數(shù)并送四位數(shù)碼管顯示，最大計(jì)數(shù)顯示值為0FFFFH。求程序。懸賞分：30-解決時(shí)間：2010-6-2722:26;===============================================最正確答案：這是個(gè)簡略頻次計(jì)，程序以下;---------------------------------

:ORG0000HJMPSTARTORG000BHJMPT0_INT;---------------------------------START:MOVTMOD,#51H;/*01010001T1

計(jì)數(shù),T0

準(zhǔn)時(shí)*/MOVTH0,#HIGH(65536-50000);50ms@12MHzMOVTL0,#LOW(65536-50000)MOVTH1,#0MOVTL1,#0SETBTR0SETBTR1SETBET0SETBEAMOVR7,#20SJMP$;---------------------------------T0_INT:;50ms履行一次MOVTL0,#LOW(65536-50000);從頭寫入初始值MOVTH0,#HIGH(65536-50000);50ms@12MHzDJNZR7,T0_ENDMOVR7,#20MOVP1,TL1MOVP2,TH1MOVTL1,#0MOVTH1,#0T0_END:RETI;---------------------------------END外接74系列驅(qū)動(dòng)電路就行，比方74LS164或74LS138。動(dòng)向掃描就是給各個(gè)數(shù)碼管挨次顯示，隨意時(shí)間只有一個(gè)數(shù)碼管亮，但閃耀的太快了，人眼分辨不出，給人的感覺就是每個(gè)數(shù)碼管都在亮。一般過程就是賦值，開顯示，延時(shí)，關(guān)顯示，這是我從前寫過的程序#include<REGX52.H>main( ){unsignedinti;while(1){P0=0x3f;//個(gè)位賦值P1_0=0;//開顯示for(i=0;i<2;i++);//延時(shí)P1_0=1;//關(guān)顯示P0=0x6;//十位P1_1=0;for(i=0;i<2;i++);P1_1=1;P0=0x5b;//百位P1_2=0;for(i=0;i<2;i++);P1_2=1;P0=0x4f;//千位P1_3=0;for(i=0;i<2;i++);P1_3=1;}}這個(gè)是4位數(shù)碼管，P0口接賦值端，P1口低四位接4個(gè)數(shù)碼管的選通端，你要八個(gè)的話就把P1口的高四位再接到此外四個(gè)數(shù)碼管的片選端，程序模