單片機(jī)課程設(shè)計(jì)說(shuō)明書(shū)-基于at89s52單片機(jī)的數(shù)字倒計(jì)時(shí)器設(shè)計(jì)-在線瀏覽
2025-01-13 17:23本頁(yè)面
【正文】 NE A, B, BK MOV A, 22H MOV B, 24H CJNE A, B, BK SETB MOV C, JC XX 單片機(jī)課程設(shè)計(jì)說(shuō)明書(shū) XX: LCALL TIMEOUT BK: RET TIMEOUT: X1: LCALL BZ LCALL DISPLAY2 CLR JB K4， X1 RET BZ: CLR MOV R7, 250 T2: MOV R6, 124 T3: DJNZ R6， T3 DJNZ R7， T2 JB K4， XY LCALL XIAOZHEN3 MOV C, JC XY1 XY: RET XY1: LJMP LOOP XIAOZHEN1: LCALL DISPLAY1 JB K1， XIAOZHEN1 MOV C, K1 LCALL JC XIAOZHEN1 LCALL DELAY MOV C, K1 單片機(jī)課程設(shè)計(jì)說(shuō)明書(shū) JC XIAOZHEN1 STOP1: MOV C, K1 JNC STOP1 LCALL DELAY MOV C, K1 JNC STOP1 SETB RET XIAOZHEN2: LCALL DISPLAY2 JB K2， XIAOZHEN2 MOV C, K2 JC XIAOZHEN2 STOP2: MOV C, K2 JNC STOP2 LCALL DELAY MOV C, K2 JNC STOP2 SETB RET XIAOZHEN3: LCALL DISPLAY1 JB K4， XIAOZHEN3 MOV C, K4 JC XIAOZHEN3 LCALL DELAY MOV C, K4 單片機(jī)課程設(shè)計(jì)說(shuō)明書(shū) JC XIAOZHEN3 STOP3: MOV C, K4 JNC STOP3 LCALL DELAY MOV C, K4 JNC STOP3 SETB RET XIAOZHEN4: LCALL DISPLAY1 JB K2， XIAOZHEN4 MOV C, K2 JC XIAOZHEN4 LCALL DELAY MOV C, K2 JC XIAOZHEN4 STOP4: MOV C, K2 JNC STOP4 LCALL DELAY MOV C, K2 JNC STOP4 SETB RET XIAOZHEN5: LCALL DISPLAY1 JB K3， XIAOZHEN5 MOV C, K3 單片機(jī)課程設(shè)計(jì)說(shuō)明書(shū) JC XIAOZHEN5 LCALL DELAY MOV C, K3 JC XIAOZHEN5 STOP5: MOV C, K3 JNC STOP5 LCALL DELAY MOV C, K3 JNC STOP5 SETB RET XIAOZHEN6: LCALL DISPLAY2 JB K3, XIAOZHEN6 MOV C, K3 JC XIAOZHEN6 LCALL DELAY MOV C, K3 JC XIAOZHEN6 STOP6: MOV C, K3 JNC STOP6 LCALL DELAY MOV C, K3 JNC STOP6 SETB RET 單片機(jī)課程設(shè)計(jì)說(shuō)明書(shū) XIAOZHEN7: LCALL DISPLAY2 JB K1, XIAOZHEN7 MOV C, K1 JC XIAOZHEN7 LCALL DELAY MOV C, K1 JC XIAOZHEN7 STOP7: MOV C, K1 JNC STOP7 LCALL DELAY MOV C, K1 JNC STOP7 SETB RET DELAY: MOV R4, 14H DL00: MOV R5, OFFH DL11: DJNZ R5, DL11 DJNZ R4, DL00 RET TIME: PUSH ACC PUSH PSW MOVTH0, 03CH MOV TL0, 0B0H DJNZ R2, RET0 MOV R2, 14H 單片機(jī)課程設(shè)計(jì)說(shuō)明書(shū) MOV A, 20H CLR C DEC A CJNE A, 0, G01 MOV 20H, 3CH MOV 30H, 0 MOV 31H, 0 MOV A, 21H DEC A CJNE A, 3CH, G02 MOV 21H, 0H MOV 32H, 0 MOV 33H, 0 MOV A, 22H DEC A CJNE A, 18H， GO3 MOV 22H, 00H MOV 34H, 0 MOV 35H, 0
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