用at98c51制作八路搶答器(參考版)
2025-05-19 06:47本頁面
【正文】 C, POWER開關(guān)是否有接觸不良.結(jié)束語首先,一開始真的很苦惱,我不知道從何寫起,而且
,無從下手的我,甚至想過放棄,
比爾如果操作有誤,多按了得分鍵或扣
分鍵,也可用按相反的計(jì)分鍵來修改分?jǐn)?shù).(10) 違規(guī)搶答當(dāng)主持人讀題過程中,.開機(jī)無顯示解決辦法: A,查電源插座是否插好。***T1溢出中斷(計(jì)時(shí)程序) ***T1INT: MOV TH1,3CH MOV TL1,0B0HINC R0RETIEND第4節(jié) 技術(shù)指標(biāo)及故障處理電源電壓:交流220V177。CPL 。按鍵發(fā)聲RET。延時(shí)(顯示和去抖動(dòng)用到) DELAY: MOV 32H,12HLOOP: MOV 33H,0AFHLOOP1: DJNZ 33H,LOOP1DJNZ 32H,LOOPRET。第一個(gè)為零,其他與上相同,因?yàn)槭蝗绻麨榱泔@示熄滅。查表顯示程序,利用P0口做段選碼口輸出/P2低三位做位選碼輸出,MOV A,R5MOVC A,A+DPTRMOV P2,01HMOV P0,AACALL DELAYMOV DPTR,DAT2MOV A,R4MOVC A,A+DPTRMOV P2,02HMOV P0,AACALL DELAYMOV A,R3MOVC A,A+DPTRMOV P2,04HMOV P0,AACALL DELAYRETDAT1:DB 00H,06h,5bh,4fh,66h,6dh,7dh,07h,7fh,6fh,00H,71H。顯示FF和號(hào)數(shù)AJMP CHECK1CHECK1: JNB ,QUIT1ACALL DISPLAYAJMP HEREQUIT1: CLR RINGCLR OKAJMP START。下面系1s的情況,響并顯示號(hào)數(shù)并清R0,重新計(jì)SETB RINGMOV R0,00HMOV R3,34H。滅并停響CLR RING MOV R3,0AHMOV R4,0AHMOV R5,0AH。***犯規(guī)搶答程序***ERROR: MOV R0,00HMOV TH1,3CHMOV TL1,0B0HMOV 34H,R3。MOV A,R2MOV R6,AMOV R3,06HCLR OKAJMP COUNTTRUE7:ACALL BARK。MOV A,R2MOV R6,AMOV R3,04HCLR OKAJMP COUNTTRUE5:ACALL BARK。MOV A,R2MOV R6,AMOV R3,02HCLR OKAJMP COUNTTRUE3: ACALL BARK。搶答時(shí)間R2送R6MOV R3,01HCLR OK。因?yàn)榇痤}的計(jì)時(shí)不再查詢搶答,所以就鎖了搶答AJMP COUNTTRUE1: ACALL BARK。 按鍵發(fā)聲MOV A,R2。如果按下了停止鍵執(zhí)行的程序CLR RINGAJMP START。如按下停止鍵退出ACALL DISPLAYJB OK,ACCOUT。如果1s向下運(yùn)行,否者跳到查停/顯示DEC R6。計(jì)時(shí)完畢MOV R0,00HDEC R6。CLR RING AJMP CHECKFULL: CJNE A,14H,CHECK。取個(gè)位MOV A,R6SUBB A,07HJNC LARGER。個(gè)位存于(31H)MOV R5,30H。除十分出個(gè)位/十位MOV 30H,A。重置定時(shí)器RECOUNT:MOV A,R6。***倒計(jì)時(shí)程序(搶答倒計(jì)時(shí)和回答倒計(jì)時(shí)都跳到改程序)*** COUNT: MOV R0,00H。如果R1為0, R1就置99,DEC R1ACALL DELAY1AJMP INT0SUBSETR1: MOV R1,63HACALL DELAY1AJMP INT0SUBBACK0: RETI 。,如按下跳到BACKOAJMP INT0SUBINC0: MOV A,R1CJNE A,63H,ADD0。+1s鍵,如按下跳到INCOJNB ,DEC0。***INT0(搶答時(shí)間R1調(diào)整程序) ***INT0SUB: MOV A,R1MOV B,0AHDIV ABMOV R5,AMOV R4,BMOV R3,0AHACALL DISPLAY。按鍵發(fā)聲MOV R3,00HAJMP ERRO
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