基于stc89c52rc單片機(jī)的數(shù)字時(shí)鐘設(shè)計(jì)論文(參考版)
2024-10-27 10:29本頁面
【正文】 ***：基于 STC89C52RC 單片機(jī)的數(shù)字時(shí)鐘設(shè)計(jì) 9 附錄 HOUR EQU 20H MIN EQU 21H SEC EQU 22H DEDA EQU 23H BUFSA EQU 79H SB1 EQU SB2 EQU SB3 EQU SB4 EQU SPK EQU WLED EQU ORG 0000H LJMP START ORG 000BH LJMP TO_INTSV ORG 0030H TO_INTSV: PUSH ACC PUSH PSW MOV TLO,0BBH MOV THO,3CH INC DEDA MOV A,DEDA CJNE A,14H,RETN MOV DEDA,00H MOV A,SEC ADD A,01H DA A MOV SEC,A CJNE A,60H,RETN MOV SEC,00H MOV A,MIN ADD A,01H DA A MOV HOUR,A CJNE A,24H,RETN MOV HOUR,00H RETN: POP PSW POP ACC RETI 江蘇 **職業(yè)技術(shù)學(xué)院畢業(yè)論文（設(shè)計(jì)） 10 ORG 0100H START: ACALL SPKR250 ACALL SPKR250 ACALL LED_BL MOV A,50H MOV TMOD,01H MOV TLO,0B0H MOV THO,3CH MOV IE,82H SETB TRO MOV HOUR,00H MOV MTN,00H MOV SEC,00H MOV DEDA,00H MLOOP: ACALL BCDEX ACALL DISPLAY JB SB1,MSB1 ACALL LED_BL ACALL SET_TIME JMP MLOOP MSB1: JB SB2,MSB2 JMP MLOOP MSB2: JB SB3,MSB3 JMP MLOOP MSB3: JB SB4,MLOOP JMP MLOOP BCDEX: MOV R3,03H MOV R0,BUFSA MOV R1,HOUR LOOP: MOV A,R1 SWAP A ANL A,0FH MOV
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