計(jì)算機(jī)單片總體方案設(shè)計(jì)-資料下載頁(yè)
2025-05-06 01:29本頁(yè)面
【正文】 A MOV A,YJ DIV AB MOV YJ,A MOV R3,0 LJMP DISP1 DEN: MOV R3,0 LJMP DISP1DISP1:MOV B,10 MOV A,YJ ；結(jié)果送累加器 DIV AB ；結(jié)果除10 MOV YJI,A ；暫存“商” MOV A,B ；取個(gè)位數(shù) MOV 34H,A ；各位數(shù)送顯示緩存 MOV A,YJ1 JZ DISP11 ；結(jié)果是否為一位數(shù) MOV B,10H MOV 34H,A MOV A,YJ1 DIV AB MOV YJI,A MOV A,B MOV 33H,A ；十位數(shù)送顯示緩存 MOV A,YJ1 JZ DISP11 ；結(jié)果是否為二位數(shù) MOV 32H,A ；百位數(shù)送顯示緩存DISP11:LJMP MLOOPDISP:MOV R0,DBUF ；顯示子程序 MOV R1,TEMP MOV R2,5DO10:MOV DPTR,SEGTAB MOV A,@R0 MOVC A,@A+DPTR MOV @R1,A INC R0 INC R1 DJNZ R2,DP10 MOV R0,TEMP MOV R1,5DP12:MOV R2,8 MOV A,@R0DP13:RLC A MOV DIN,C CLR CLk SETB CLk DJNZ R2,DP13 INC R0 DJNZ R1,DP12 RETSEGTAB:DB 3FH,06H,5BH,4FH,66H,6DH ；段碼定義 DB 7DH,07H,7FH,6FH,77H,7CH DB 39H,5EH,79H,71H,00H,40HTESTkEY:MOV P1,0FH ；讀入鍵狀態(tài) MOV A,P1 CPL A ANL A,0FH ；高四位不用 RETkEYTABLE:DB 0EEH,0DEH,0BEH,07EH ；鍵碼定義 DB 0EDH,0DDH,0BDH,07DH DB 0EBH,0DBH,0BBH,07BH DB 0E7H,0D7H,0B7H,077HGETkEY:MOV R6,10 ；讀鍵子程序 CALL DELAY MOV P1,0FH MOV A,P1 CJNE A,0FH,k12 LJMP MLOOPk12: MOV B,A MOV P1,0EFH MOV A,P1 CJNE A,0EFH,k13 MOV P1,0DFH MOV A,P1 CJNE A,0DFH,k13 MOV P1,0BFH MOV A,P1 CJNE A,0BFH,k13 MOV P1,7FH MOV A,P1 CJNE A,7FH,k13 LJMP MLOOPk13: ANL A,0F0H ORL A,B MOV B,A MOV R1,16 MOV R2,0 MOV DPTR,kEYTABLYk14: MOV A,R2 MOVC A,@A+DPTR CJNE A,B,k16 MOV P1,0FHk15: MOV A,P1 CJNE A,0FH,k15 MOV R6,10 LCALL DELAY MOV A,R2 RETk16: INC R2 DJNZ R1,k14 LJMP MLOOPDELAY:MOV R7,0 ； 延時(shí)子程序DLOOP:DJNZ R7,CLOOP DJNZ R6,DLOOP RET160
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