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程序:

ORG 0000H

LJMP MAIN

ORG 000BH

LJMP TIME

ORG 1000H

HOUR1 EQU 10h

HOUR2 EQU 12h

MIN1 EQU 14h

MIN2 EQU 16h

SEC1 EQU 18H

COUNT EQU 20H

NUM1 EQU 22H

NUM2 EQU 24H

LL4 EQU 26H

s1 bit P1.0

s2 bit P1.1

s3 bit P1.2

s4 bit P1.3

A1 EQU 36H

A2 EQU 38H

B1 EQU 40H

B2 EQU 42H

WELA bit P1.6

DULA bit P1.7

C1 EQU 48H

C2 EQU 50H

D1 EQU 52H

D2 EQU 54H

F1 EQU 56H

E1 EQU 58H

TIMEEPRO EQU 60H

MAIN:

MOV SP,#50H

MOV P3,#0FFH

START:

MOV HOUR1,#00H

MOV MIN1,#00H

MOV SEC1,#00H

MOV HOUR2,#01H

MOV MIN2,#00H

MOV COUNT,#00H

MOV NUM1,#00H

MOV NUM2,#00H

MOV TMOD,#01H

MOV TH0,#0D8H

MOV TL0,#0EFH

SETB ET0

SETB EA

SETB TR0

LOOP:

MOV A,NUM2

JNZ LOOP1

LCALL DISPLAY1

LCALL KEYTIME

LCALL SETTIME

LJMP LOOP LOOP1:

LCALL DISPLAY2

LCALL KEYTIME

LCALL SETTIME

LJMP LOOP ;＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊SETTIME PROGRAM＊＊＊＊＊＊＊＊＊＊

MM2:

LCALL DISPLAY2

MOV A,NUM2

CJNE A,#2,LL5

DEC MIN2

MOV A,MIN2

CJNE A,#0,LL5

MOV MIN2,#60

LL5:

LCALL DISPLAY2 RET ;＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊KEYTIME PROGRAM＊＊＊＊＊＊＊＊＊＊＊＊

KEYTIME:

L1:

JB S2,L3

LCALL DELAY5

MSTOP2:

JB S2,L3

MOV C,S2

JNC MSTOP2

INC NUM1

MOV A,NUM1

CJNE A,#1,L2

CLR TR0

L2:

CJNE A,#4,L3

MOV NUM1,#0

SETB TR0

總結(jié)

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