匯編代碼：
程序代碼
LED_0?EQU?30H
LED_1?EQU?31H
LED_2?EQU?32H ?
ADC?EQU?35H
CLOCK?BIT?P2.4
ST?BIT?P2.5
EOC?BIT?P2.6
OE?BIT?P2.7
ORG?00H ?
SJMP?START ?
ORG?0BH ?
LJMP?INT_T0 ?
START:?MOV?LED_0,?#00H
MOV?P2,?#0FFH
MOV?LED_1,?#00H
MOV?LED_2,?#00H
MOV?DPTR,?#TABLE ?
MOV?TMOD,?#02H ?
MOV?TH0,?#245H ?
MOV?TL0,?#00H
MOV?IE,?#82H
SETB?TR0
WAIT:?CLR?ST
? SETB?STH
? CLR?ST
? JNB?EOC,?$ ?
? SETB?OE
? MOV?ADC,?P1
? CLR?OE ?
? MOV?A,?ADC ?
? MOV?B,?#51
? DIV?AB
? MOV?LED_2,?A ?
? MOV?A,?B
? MOV?B,?#5
? DIV?AB ?
? MOV?LED_1,?A
? MOV?LED_0,?B
? LCALL?DISP ?
? SJMP?WAIT
INT_T0:?CPL,?CLOCK ?
? RETI
DISP:?MOV?A,?LED_0 ?
? MOVC?A,?@A+DPTR
? CLR?P2.3
? MOV?P0,?A
? LCALL?DELAY
? SETB?P2.3
? MOV?A,?LED_1 ?
? MOVC?A,@A+DPTR ?
? CLR?P2.2?
? MOV?P0,?A ?
? LCALL?DELAY
? SETB?P2.2
? MOV?A,?LED_2
? MOVC?A,?@A+DPTRL
? CLR?P2.1
? ORL?A,?#80H
? MOV?P0,?A
? LCALL?DELAY
? SETB?P2.1
? RET
DELAY:?MOV?R6,?#10
D1: MOV?R7,?#250
? DJNZ?R7,?$
? DJNZ?R6,?D1
? RET
TABLE:?DB?3FH,?06H,?5BH,?4FH,?66H ?
DB?6DH,?7DH,?07H,?7FH,?6FH
? END