【正文】 RETA_R0 : MOV R2,A SWAP A ANL A,0FH MOV @R0,A INC R0 MOV A,R2 ANL A,0FH MOV @R0,A INC R0 RETSKEY: JNB 01H,S_2 MOV R0,22H MOV @R0,A ；A中放鍵值 INC 22H ；指向下一個數(shù)碼管 MOV A,22H CJNE A,46H,S_1 S_1: JC S_2 MOV 22H,44HS_2: RET STOP: CLR TR0 ；停止定時 CLR 03H ；停止加熱 CLR 04H ；停止保溫 CLR ；指示燈熄滅 SETB ；加熱膜停止加熱 CLR CLR MOV 44H,0BH ；顯示good MOV 45H,0AH MOV 46H,0DH MOV 47H,0EH RETMKEY_1:SETB TR0 SETB 01H MOV 22H, 44HRETXIAODU:SETB 03H ；鍵按下，執(zhí)行消毒 CLR 04H CLR SETB SETB RETBAOWEN: SETB 04H ；保溫鍵按下，執(zhí)行保溫 CLR 03H CLR 05H SETB RETMKEY_2: JNB 01H,ML0 MOV R0, 44H MOV A,@R0 ANL A,0FH SWAP A MOV R2, A INC R0 MOV A, @R0 ANL A, 0FH ORL A, R2 MOV 35H,A CLR 01H DEC 35H MOV 31H,59H SETB TR0 ML0: RET INT_T0: PUSH ACC PUSH PSW MOV PSW, 08H ；換區(qū) MOV TL0,0B0H MOV TH0,3CH INC 30H ；中斷次數(shù)加1 MOV A,30H CJNE A,0AH,L2 L2: JC L6 SETB 02H MOV 30H,00H MOV A,31H ADD A,99H ；秒減1 DA A MOV 31H,A JNZ L6 MOV 31H,59H MOV A,35H ADD A,99H DA A ；分減1 MOV 35H,AJNZ L6 CLR 02H MOV 35H,00H LCALL STOP L6: POP PSW POP ACC RETIHOT_NOT: JB 03H,LL0 ；加熱標(biāo)志為1則轉(zhuǎn)LL0 JB 04H,LL2 ；保溫標(biāo)志為1則轉(zhuǎn)LL2 AJMP LL8 ；跳轉(zhuǎn)到LL8LL0: MOV A,60H ；溫度值送A CJNE A,50H,LL1 ；溫度值與80度比較,不相等LL1LL1: JC LL 9 ；小于則轉(zhuǎn)LL9 SJMP LL7 ；跳轉(zhuǎn)到LL7LL2: MOV A,60H ；溫度值送A CJNE A,3CH,LL3 ；溫度值與60度比較,不相等轉(zhuǎn) LL3LL3: JC LL4 ；小于則轉(zhuǎn)到LL4 SETB ；,不加熱 CLR ；,加熱指示燈熄滅 CLR 05H ；停止標(biāo)志為0 SJMP LL8 ；跳轉(zhuǎn)到LL8LL4: MOV A,60H ；溫度值送A CJNE A,28H,LL5 ；溫度值與40度比較,不相等轉(zhuǎn) LL5LL5: JNC LL6 ；溫度大于40轉(zhuǎn)LL6 CLR ；小于則執(zhí)行加熱 CLR 05H SETB ；加熱指示燈點(diǎn)亮 SJMP LL8 ；跳轉(zhuǎn)到LL8LL6: CLR 05H SJMP LL8LL7: CLR SETB SJMP LL8LL9: CLR SETB LL8: RETKEY: ACALL KEY1 ；調(diào)用讀鍵值子程序 CJNE A,0FFH,LPP1 CLR 00H RETLPP1: JB 00H,LPP2 SETB 00H ACALL KEYNUM RETLPP2: MOV A,0FFH RET。讀鍵值子程序KEY1: CLR MOV R6,0CH DJNZ R6,$ MOV A,15H ACALL STFS MOV R6,6 DJNZ R6,$ ACALL STJS SETB RETSTJS: MOV R7,08HS_0: SETB SETB MOV R6,02H DJNZ R6,$ MOV C, RLC A CLR MOV R6,1 DJNZ R6,$ DJNZ R7,S_0 RET。根據(jù)鍵值求鍵號KEYNUM :MOV B,A MOV R2,00H MOV R7,0FHKEY_0: MOV A,R2 ADD A,0AH MOVC A,@A+PC CJNE A,B,KEY_1 SJMP KEY_2KEY_1: INC R2 DJNZ R7,KEY_0KEY_2: MOV A,R2 RETTAB0: DB 1CH,1DH,1EH,1FH,14H DB 15H,16H,17H,0CH,0DH DB 0EH,0FH,04H,05H,06H STFS: MOV R6,50 DJNZ R6,$ MOV R7,8ST_1: RLC AMOV ,C SETB MOV R6,2 DJNZ R6,$ CLR MOV R6,2 DJNZ R6,$ DJNZ R7,ST_1 RETDIR: MOV R5,08H MOV R0,40H MOV R1,97HDIR1: CLR MOV R6,0C0H DJNZ R6,$ MOV A,R1 ACALL STFS MOV R6,04H DJNZ R6,$ CJNE R0,45H,DIR2 MOV A,@R0 ADD A,1CH AJMP DIR3DIR2: MOV A,@R0 ADD A,0DHDIR3: MOVC A,@A+PC ACALL STFS MOV R6,02H DJNZ R6,$ SETB INC R0 DEC R1 DJNZ R5,DIR1 RETTAB: DB 7EH,30H,6DH,79H,33H DB 5BH,5FH,70H,7FH,7BH DB 01H,7BH,7EH,7EH,3DH DB 0FEH,0B0H,0EDH,0F9H,0B3H,0DBH,0DFH,0F0H,0FFH,0FBH DB 7EHEND參考文獻(xiàn):[1] 張友德：單片微型機(jī)原理、應(yīng)用與實(shí)驗(yàn)，上海復(fù)旦大學(xué)出版社，P7P21[2] 陳黎娟、聶鵬程：單片微型計(jì)算機(jī)實(shí)驗(yàn)教程，南昌航空大學(xué)，P17P32[3] 沈美明、溫冬嬋：IMB PC匯編語言程序設(shè)計(jì)，清華大學(xué)出版社， P12P22[4] 吳金戍、郭庭吉：89C51單片機(jī)實(shí)踐與應(yīng)用，清華大學(xué)出版社，P132P143[5] 王福瑞：單片微機(jī)測控系統(tǒng)設(shè)計(jì)大全，北京航空大學(xué)出版社，P7P15[6] 何立民：單片機(jī)應(yīng)用技術(shù)選編，北京航空航天大學(xué)出版社，2001，P18P43[7] 鄔寬明：單片機(jī)外圍器件實(shí)用手冊，北京航空航天大學(xué)出版社，1998，P56P76 [8] 鮑健等：用單片機(jī)直接驅(qū)動液晶顯示器，量子電子學(xué)報(bào)，P32P42 [9] 王春林：，, P43P54