基于51單片機(jī)的計(jì)算器設(shè)計(jì)程序代碼

1、；PAN調(diào)顯示子程序；判斷有無按鍵；讀鍵；按鍵個(gè)數(shù)；判斷就是否數(shù)字鍵；轉(zhuǎn)數(shù)字鍵處理；判斷就是否功能鍵；轉(zhuǎn)功能鍵處理DBUFEQUTEMPEQUYJEQUYJ1EQUGONGEQUORGSTART:MOVMOVMOVMOVMOVMOVMOVMLOOP:CALLWAIT:CALLJZCALLINCCJNELJMPNEXT1:CJNELJMPNEXT2:CJNELJMPNEXT3:CJNELJMPNEXT4:CJNELJMPNEXT5:CJNELJMPNEXT6:CJNELJMPNEXT7:CJNELJMPNEXT8:CJNELJMPNEXT9:CJNELJMPNEXT10:CJNELJMPNEXT

2、11:CJNELJMP30H40H50H51H52HOOHR3,#0GONG,#030H,#10H31H,#10H32H,#10H33H,#10H34H,#10HDISPTESTKEYWAITGETKEYR3A,#0,NEXT1E1A,#1,NEXT2E1A,#2,NEXT3E1A,#3,NEXT4E1A,#4,NEXT5E1A,#5,NEXT6E1A,#6,NEXT7E1A,#7,NEXT8E1A,#8,NEXT9E1A,#9,NEXT10E1A,#10,NEXT11E2A,#11,NEXT12E2；結(jié)果存放沖間結(jié)果存放；功能鍵存放；初始化顯示為空NEXT12:CJNELJMPA,#12,N

3、EXT13E2NEXT13:CJNELJMPNEXT14:CJNELJMPNEXT15:LJMPE1:CJNELJMPN1:CJNELJMPN2:CJNELJMPN3:LJMPE11:MOVMOVMOVMOVLJMPE12:MOVMOVMOVMULADDMOVMOVA,#13,NEXT14E2A,#14,NEXT15E2E3R3,#1,N1E11R3,#2,N2E12R3,#3,N3E13E3R4,A34H,A33H,#10H32H,#10HMLOOPR7,AB,#10A,R4ABA,R7R4,A32H,#10H；判斷就是否清除鍵；判斷第幾次按鍵；為第一個(gè)數(shù)字為第二個(gè)數(shù)字為第三個(gè)數(shù)字；第四個(gè)數(shù)

4、字轉(zhuǎn)溢出；輸入值暫存R4；輸入值送顯示緩存；等待再次輸入；個(gè)位數(shù)暫存R7;十位數(shù)；輸入值存R4;輸入值送顯示緩存MOV33H,34HMOV34H,R7LJMPMLOOPE13:MOVR7,AMOVB,#10MOVA,R4MULABJBOV,E3ADDA,R7JBCY,E3MOVR4,AMOV32H,33HMOV33H,34HMOV34H,R7LJMPMLOOP；輸入溢出；輸入溢出；輸入值送顯示緩存E3:MOVR3,#0MOVR4,#0MOVYJ,#0MOVGONG,#0MOV30H,#10H；按鍵次數(shù)清零；輸入值清零;計(jì)算結(jié)果清零；功能鍵設(shè)為零；顯示清空31H,#10H 32H,#10H 33

5、H,#10H 34H,#10H MLOOP34H,#10H 33H,#10H 32H,#10H RO,GONG GONG,A A,ROA,#10,N21 JIAA,#11,N22 JIANA,#12,N23 CHENG；與上次功能鍵交換；判斷功能鍵；” + “ ” II MOVMOVMOVMOVLJMPE2:MOVMOVMOVMOVMOVMOVCJNELJMPN21:CJNELJMPN22:CJNELJMPN23:CJNEA,#13,N24LJMPCHUN24:CJNEA,#0,N25FIRSTE3YJ,R4R3,#0DISP1;首次按功能鍵 n_n j LJMPN25:LJMPDENN4:L

6、JMPFIRST:MOVMOVLJMPJIA:MOVA,YJADDA,R4JBCY,N4MOVYJ,AMOVR3,#0LJMPDISP1；輸入值送結(jié)果；按鍵次數(shù)清零；結(jié)果處理；上次結(jié)果送累加器；上次結(jié)果加輸入值；溢出；存本次結(jié)果；按鍵次數(shù)清零JIAN:MOVA,YJ;上次結(jié)果減輸入值;負(fù)數(shù)溢出SUBBA,R4JBCY,N4MOVYJ,AMOVR3,#0LJMPDISP1CHENG:MOVA,YJMOVB,AMOVA,R4；上次結(jié)果乘輸入值；溢出MULABJBOV,N4MOVYJ,ACHU:DEN:DISP1:DISP11:DISP:DP10:DP12:LJMPDISP1MOVMOVMOVDIV

7、MOVMOVLJMPMOVLJMPMOVMOVDIVMOVMOVMOVMOVJZMOVMOVDIVMOVMOVMOVMOVJZMOVLJMPA,R4B,AA,YJABYJ,AR3,#0DISP1R3,#0DISP1B,#10A,YJABYJ1,AA,B34H,AA,YJ1DISP11B,#10A,YJ1ABYJ1,AA,B33H,AA,YJ1DISP1132H,AMLOOP；上次結(jié)果除輸入值；結(jié)果送累加器；結(jié)果除10；暫存"商”；取個(gè)位數(shù)；個(gè)位數(shù)送顯示緩存；結(jié)果就是否為一位數(shù)MOVR0,#DBUFMOVR1,#TEMP+4MOVR2,#5MOVDPTR,#SEGTABMOVA,R0M

8、OVCA,A+DPTRMOVR1,AINCRODECR1DJNZR2,DP10MOVR0,#TEMPMOVA,R0MOVP0,AclrP2、7；十位送顯示緩存；結(jié)果就是否為二位數(shù)；百位數(shù)送顯示緩存；顯示子程序CALLDIMSsetbP2'7INCROMOVA,R0MOVP°，AclrP2、6CALLDIMSsetbP2、6INCRoMOVA,R0MOVP0>AclrP2、5CALLDIMSsetbP2、5INCRoMOVA,R0MOVP°，AclrP2、4CALLDIMSsetbP2、4INCRoMOVA,R0MOVP0>AclrP2、3CALLDIMS

9、setbP2、3RETDIMS:DMS:MOVMOV DJNZDJNZR7,#02HR6,#0FFHR6,$R7,DMSRETSEGTAB:DB028H,7eH,0A2H,062HDB74H,61H,21H,7aHDB20H,60H,88H,83HDB0C6H,0A1H,86H,8EH,0ffHTESTKEY:ACALLDISPMOVP1,#0FH；讀入鍵狀態(tài)MOVA,P1CPLAANLA,#0FH；高四位不用RETKEYTABLE:DBODEH,OEDH,ODDH,OBDHf鍵碼定義DB0EBH,0DBH,0BBH,0E7HDB0D7H,0B7H,07EH,07DHDB07BH,077H,0

10、BEH,0EEHGETKEY:；讀鍵子程序MOVR6,#10ACALLDELAYMOVP1,#0FHMOVA,P1CJNEA,0FH,K12LJMPMLOOPK12:MOVB,AMOVP1,#0EFHMOVA,P1CJNEA,#0EFH,K13MOVP1,#0DFHMOVA,P1CJNEA,#0DFH,K13MOVP1,#0BFHMOVA,P1CJNEA,#0BFH,K13MOVP1,#07FHMOVA,P1CJNEA,#07FH,K13LJMPMLOOPK13:ANLA,#0F0HORLA,BMOVB,AMOVR1,#16MOVR2,#0MOVDPTR,#KEYTABLEK14:MOVA,R2MOVCA,A+DPTR