出租車(chē)計(jì)價(jià)系統(tǒng)設(shè)計(jì)出租車(chē)計(jì)費(fèi)系統(tǒng)設(shè)計(jì)-閱讀頁(yè)
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【正文】 CLR DSRST 。清時(shí)鐘總線(xiàn) NOP SETB DSRST 。準(zhǔn)備發(fā)送命令字節(jié) MOV BITCNT,8 SB0: RRC A MOV DSIO,C NOP SETB DSCLK NOP CLR DSCLK DJNZ BITCNT,SB0 NOP MOV A,SND 。************************************************************************ 。******************************** 。來(lái)一個(gè)脈沖記一次數(shù) 。每 100 個(gè)脈沖（ 50米）計(jì)一次 MOV TL0,09CH MOV SETTM,4 CLR LEDSET MOV A,PULSE CJNE A,22,NEXT 。起價(jià) MOV SUMJF,00H MOV DISM,00H 。每 100 個(gè)脈沖增加 50 米 ADD A,5 DA A MOV DISF,A MOV A,DISM ADDC A,0 DA A MOV DISM,A DJNZ PULSE,SKIPCT 。計(jì)算角和分 ADD A,PRICE 。調(diào)整為 BCD 碼 MOV SUMJF,A 。計(jì)算元 ADDC A,0 。調(diào)整 MOV SUMYUAN,A 。******************************** 。將金額和路程清零 。第一個(gè)脈沖發(fā)生中斷賦初值 MOV TL0,0FFH RETI 。外部中斷 1 程序 BUTTON 。******************************** BUTTON: MOV A,P2 ANL A,0E0H 。第 5 位為 0時(shí)為設(shè)置鍵 DJNZ SETTM,ST 。設(shè)置燈熄滅 ACALL WTTIME 。按 1 次為小時(shí)設(shè)置， 2次為分鐘設(shè)置， 。第 6 位為 0時(shí)為增加鍵 MOV A,SETTM CJNE A,3,ADDM 。為 2 時(shí)設(shè)置分鐘 MOV A,TIMEM INC A DA A CJNE A,60H,MLT60 MOV A,0 MLT60: MOV TIMEM,A AJMP SKIPST ADDS: CJNE A,1,SKIPST 。第 7 位為 0時(shí)為減少鍵 CJNE A,3,DECM MOV A,99H ADD A,TIMEH DA A CJNE A,99H,HGT0 MOV A,23H HGT0: MOV TIMEH,A AJMP SKIPST DECM: CJNE A,2,DECS MOV A,99H ADD A,TIMEM DA A CJNE A,99H,MGT0 MOV A,59H MGT0: MOV TIMEM,A AJMP SKIPST DECS: CJNE A,1,SKIPST MOV A,99H ADD A,TIMES DA A CJNE A,99H,SGT0 MOV A,59H SGT0: MOV TIMES,A SKIPST: RETI 。T1 的中斷程序 。********************************* DISP: MOV TH1,0F0H 。1 秒鐘讀取一次時(shí)間 HR1: MOV A,TURN CJNE A,12,HR0 MOV A,TIMEH 。顯示小時(shí)個(gè)位 ANL A,0FH MOVC A,A+DPTR ADD A,80H 。顯示分鐘十位 MOV B,10H DIV AB MOVC A,A+DPTR MOV P0,A ANL P2,0F0H MOV A,MIN1 ORL P2,A DEC TURN AJMP SKIPT1 MN0: CJNE A,9,SC1 MOV A,TIMEM 。顯示秒鐘十位 MOV B,10H DIV AB MOVC A,A+DPTR MOV P0,A ANL P2,0F0H MOV A,SEC1 ORL P2,A DEC TURN AJMP SKIPT1 SC0: CJNE A,7,STEN MOV A,TIMES 。顯示金額元十位 MOV B,10H DIV AB MOVC A,A+DPTR MOV P0,A ANL P2,0F0H MOV A,TENY ORL P2,A DEC TURN AJMP SKIPT1 SONE: CJNE A,5,STH MOV A,SUMYUAN 。顯示金額角 MOV B,10H DIV AB MOVC A,A+DPTR MOV P0,A ANL P2,0F0H MOV A,TENTHY ORL P2,A DEC TURN AJMP SKIPT1 DTEN: CJNE A,3,DONE MOV A,DISM 。顯示路程個(gè)位 ANL A,0FH MOVC A,A+DPTR ADD A,80H MOV P0,A ANL P2,0F0H MOV A,ONEM ORL P2,A DEC TURN AJMP SKIPT1 DTH: MOV A,DISF 。************************************ TAB: DB 0C0H,0F9H,0A4H,0B0H,99H,92H,82H,0F8H,80H,90H 。無(wú) 顯示的段碼 END
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