给初学单片机的40个实验-2(5)

LJMP DK2

NK5: CJNE A,#0DH,NK6 MOV KEYBUF,#5 LJMP DK2

NK6: CJNE A,#0BH,NK7 MOV KEYBUF,#6 LJMP DK2

NK7: CJNE A,#07H,NK8 MOV KEYBUF,#7 LJMP DK2 NK8: NOP DK2:

MOV A,KEYBUF MOV DPTR,#TABLE MOVC A,@A+DPTR MOV P0,A

DK2A: MOV A,P3 ANL A,#0FH XRL A,#0FH JNZ DK2A NOKEY2:

MOV P3,#0FFH CLR P3.6 MOV A,P3 ANL A,#0FH XRL A,#0FH JZ NOKEY3

LCALL DELY10MS MOV A,P3 ANL A,#0FH XRL A,#0FH JZ NOKEY3 MOV A,P3 ANL A,#0FH

CJNE A,#0EH,NK9 MOV KEYBUF,#8 LJMP DK3

NK9: CJNE A,#0DH,NK10 MOV KEYBUF,#9 LJMP DK3

NK10: CJNE A,#0BH,NK11 MOV KEYBUF,#10 LJMP DK3

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