廣東海洋大學(xué)單片機(jī)實(shí)驗(yàn)報(bào)告(編輯修改稿)
2025-08-18 12:49 本頁(yè)面
【文章內(nèi)容簡(jiǎn)介】 MOV R0,00H MOV R1,9CC: MOV DPTR,TABLE MOV A,R0 MOVC A,@A+DPTR MOV P1,A CALL DELAY INC R0 DJNZ R1,CC POP ACC POP PSW MOV P1,0FFH RETI LJMP AA DELAY: MOV R2,50D0: MOV R3,50D1: MOV R4,50D2: DJNZ R4,D2 DJNZ R3,D1 DJNZ R2,D0 RETTABLE:DB 0C0H,0F9H,0A4H,0B0H,099H,092H,082H,0F8H,080HEND實(shí)驗(yàn)四 60S倒計(jì)時(shí)實(shí)驗(yàn)一、實(shí)驗(yàn)?zāi)康模?，顯示采用兩位數(shù)碼管動(dòng)態(tài)顯示。 設(shè)計(jì)，仿真基于AT89C51單片機(jī)的60S倒計(jì)時(shí)實(shí)驗(yàn)。二、PROTEUS電路設(shè)計(jì)：三、實(shí)驗(yàn)儀器和設(shè)備PC機(jī)、PROTEUS軟件或WA51綜合開(kāi)發(fā)學(xué)習(xí)板四、源程序設(shè)計(jì)：根據(jù)電路圖自行編寫(xiě)并調(diào)試。ORG 0000HAJMP MAINORG 000BH 。T0中斷入口AJMP LOOPORG 0030HMAIN:MOV TMOD,01H 。設(shè)置T0用于定時(shí)，模式1方式MOV TH0,3CH 。裝入定時(shí)初值MOV TL0,0B0HMOV IP,02HMOV IE,82H 。T0中斷允許MOV DPTR,TABMOV R0,60MOV R1,16SETB TR0LOOP1:MOV A,R0MOV B,10DIV ABMOVC A,@A+DPTRMOV P2,80HMOV P0,AACALL DEL0MOV A,BMOVC A,@A+DPTRMOV P2,40HMOV P0,AACALL DEL0AJMP LOOP1LOOP:MOV TH0,3CHMOV TL0,0B0HDJNZ R1,LOOP2MOV R1,16DEC R0CJNE R0,0FFH,LOOP2MOV R0,60LOOP2:RETIDELAY:MOV R2,20DEL0:MOV R3,50DJNZ R3,$DJNZ R2,DEL0RETTAB:DB
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