单片机的数字温度计设计 - 图文

JNB ACC.7, ALEM MOV A, TEMPUTER SUBB A, TEMPL JB ACC.7, ALEM SETB P2.1 ACALL WENDU ACALL DISP

MOV S1OK, #00H AJMP START ALEM: MOV 36H, #0CH MOV 37H, #0CH MOV 38H, #0CH CLR P2.1 ACALL DISP ACALL T1S LCALL WENDU LCALL DISP

MOV S1OK, #00H SJMP START

;***************************************** TIAOTL:MOV 50H, TEMPUTER MOV 37H, TEMPL ACALL BIN_BCD ACALL DISP ACALL T12MS ACALL T12MS ACALL T12MS ACALL T12MS MOV 36H, #0AH MOV 37H, #0AH

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MOV 38H, #0AH ACALL DISP ACALL T12MS ACALL T12MS ACALL T12MS ACALL T12MS JB S2, ADD1 ACALL T12MS JB S2, ADD1 JNB S2, $ INC TEMPL MOV A, TEMPL CJNE A, #100, ADD1 MOV TEMPL, #0 ADD1: JB S3, ADD2 ACALL T12MS JB S3, ADD2 JNB S3, $ DEC TEMPL MOV A, TEMPL CJNE A, #00 , ADD2 MOV TEMPL,#100 ADD2: JB S4, TIAOTL ACALL T12MS JB S4, TIAOTL JNB S4, $

MOV TEMPUTER, 50H LJMP START ; 高位调整

; *****************************************

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TIAOTH:MOV 50H, TEMPUTER MOV 37H, TEMPH ACALL BIN_BCD ACALL DISP ACALL T12MS ACALL T12MS ACALL T12MS ACALL T12MS MOV 36H, #0AH MOV 37H, #0AH MOV 38H, #0AH ACALL DISP ACALL T12MS ACALL T12MS ACALL T12MS ACALL T12MS JB S2, ADD11 ACALL T12MS JB S2, ADD11 JNB S2, $ INC TEMPH MOV A, TEMPH CJNE A, #100, ADD11 MOV TEMPH, #0 ADD11: JB S3, ADD22 ACALL T12MS JB S3, ADD22 JNB S3, $ DEC TEMPH MOV A, TEMPH

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CJNE A, #00 , ADD22 MOV TEMPH,#100 ADD22: JB S4, TIAOTH ACALL T12MS JB S4, TIAOTH JNB S4, $

MOV TEMPUTER, 50H LJMP START

; 一秒定时中段

; ***************************************** TOIT: PUSH PSW PUSH ACC MOV TH0, #3CH MOV TL0, #0B0H INC MS50 MOV A, MS50 CJNE A, #14H, RETURN MOV S1OK, #1 MOV MS50, #00H RETURN:POP ACC POP PSW RETI

; *****************************************

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