單片機課程設(shè)計簡易計算器的設(shè)計-wenkub.com
2025-06-23 09:44 本頁面
【正文】 參考文獻[1] （MCS51兼容）FLASH單片機原理及應用. 電子工業(yè)出版社. 1997年 [2] 這次課程設(shè)計我學到很多很多的東西，學會了怎么樣去制定計劃，怎么樣去實現(xiàn)這個計劃，并掌握了在執(zhí)行過程中怎么樣去克服心理上的不良情緒。隨著科學技術(shù)發(fā)展的日新日異，單片機已經(jīng)成為當今計算機應用中空前活躍的領(lǐng)域， 在生活中可以說得是無處不在。2. 實踐經(jīng)驗不夠，知識不夠解決問題需花較多時間。乘法運算：積不超過99999999的乘法運算，若超出上限，顯示錯誤提示“Error!”。再次驗證99999999*99999999結(jié)果溢出。乘法部分chengfa: mov a,50h cjne a,1,cheng4 mov a,2fh cjne a,30h,cheng4 retcheng4: mov a,51h cjne a,1,cheng5 mov a,3fh cjne a,30h,cheng5 mov 52h,1 sjmp chengcheng5: mov 57h,3fh mov r2,0 mov a,50h add a,51h mov 52h,a mov r3,51h cjne a,17,cheng3cheng3: jc cheng mov 50h,16 retcheng: mov 54h,2fh mov r1,4fh mov a,r1 clr c subb a,r2 mov r1,a mov r4,50hcheng0: mov r0,54h mov a,r0 anl a,0fh push acc mov r0,57h mov a,r0 anl a,0fh pop b mul ab push acc mov a,r1 pop b add a,b lcall bcd mov r1,b dec r1 push acc mov a,r1 pop b add a,b mov r1,a dec 54h djnz r4,cheng0 dec 57h inc r2 djnz r3,cheng dec 52h mov a,4fh subb a,52h mov r0,a cjne r0,0,cheng1 sjmp cheng2cheng1: inc 52hcheng2: lcall jieguo ret。 acall start mov p0,80h mov r0,20h mov r6,10h acall write1 pop dpl pop dpl mov dptr,main1 push dpl push dph retsuan2: mov 53h,1 mov a,50h cjne a,1,suan3 mov a,2fh cjne a,30h,suan3 sjmp suan4suan3: mov a,58h cjne a,0ffh,suan4 mov a,2fh subb a,50h mov r1,a mov r1,39。 mov 2eh,39。 mov 2ch,39。計算部分suan: mov a,55h cjne a,1,su0 mov a,58h cjne a,0,su acall jiafa sjmp suan0su: acall jianfa sjmp suan0su0:cjne a,2,su4 mov a,58h cjne a,0,su1 acall jianfa sjmp suan0su1:acall jiafa sjmp suan0su4:cjne a,3,su5 acall chengfa sjmp suan0su5:acall chufasuan0: mov r0,50h cjne r0,16,suan1suan1: jc suan2su6:mov r0,20hsu7:mov r0,0 inc r0 cjne r0,30h,su7 mov 2ah,39。e=0執(zhí)行顯示命令 acall delay 。調(diào)用寫入數(shù)據(jù)寄存器子程序 inc r0 。調(diào)用寫入命令子程序 mov p0,6h 。調(diào)用寫入命令子程序 mov p0,8h 。寫入顯示起始地址（第一行第一個位置） acall enable 。orl 或y0: cjne a,0e7h,y1 ajmp mainy1: cjne a,0d7h,y2 mov b,31h ajmp chay2: cjne a,0b7h,y3 mov b,34h ajmp chay3: cjne a,77h,y4 mov b,37h ajmp chay4: cjne a,0ebh,y5 mov b,30h ajmp chay5: cjne a,0dbh,y6 mov b,32h ajmp chay6: cjne a,0bbh,y7 mov b,35h ajmp chay7: cjne a,7bh,y8 mov b,38h ajmp chay8: cjne a,0edh,y9 cjne r1,50h,y81 cjne r1,0,y81 ajmp d0y81:mov a,55h cjne a,0,y82 ajmp d0y82:mov a,5ah cjne a,0,y87 mov a,51h cjne a,0,y88 mov 51h,50h mov r0,2fh mov r1,3fh mov r2,10hy83:mov a,r0 mov r1,a dec r0 dec r1 djnz r2,y83 mov a,55h cjne a,1,y84 mov a,58h cjne a,0ffh,y87 mov 55h,2 sjmp y87y84:cjne a,2,y88 mov a,58h cjne a,0ffh,y87 mov 55h,1 sjmp y87y88:mov a,55h cjne a,3,y89 sjmp y85y89:cjne a,4,y87y85:mov a,58h cjne a,0ffh,y86 mov 59h,0ffhy86:xrl a,59h mov 58h,ay87:acall suan ajmp d0y9: cjne a,0ddh,ya mov b,33h ajmp chaya: cjne a,0bdh,yb mov b,36h ajmp chayb: cjne a,7dh,yc mov b,39h ajmp chayc: cjne a,0eeh,yd mov a,1 mov 59h,0 push acc acall f sjmp ygyd: cjne a,0deh,ye mov a,2 mov 59h,0 push acc acall f sjmp ygye: cjne a,0beh,yf mov a,3 mov 59h,0 push acc acall f sjmp ygyf: mov a,4 mov 59h,0 push acc acall fyg: pop 55h mov 51h,0 mov r0,30hyg0:mov r0,0 inc r0 cjne r0,40h,yg0 ajmp d1cha:mov a,56h cjne a,0,cha6 sjmp cha0cha6: cjne r1,10,cha0 ajmp testcha0:
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