【正文】 MOVC A,A+DPTRMOV STH0,AMOV TH0,AINC TEMPMOV A,TEMPMOVC A,A+DPTRMOV STL0,AMOV TL0,ASETB TR0DK1A: MOV A,P3ANL A,0FHXRL A,0FHJNZ DK1ACLR TR0NOKEY1:MOV P3,0FFHCLR MOV A,P3ANL A,0FHXRL A,0FHJZ NOKEY2LCALL DELY10MSMOV A,P3ANL A,0FHXRL A,0FHJZ NOKEY2MOV A,P3ANL A,0FHCJNE A,0EH,NK5MOV KEYBUF,4LJMP DK2NK5: CJNE A,0DH,NK6MOV KEYBUF,5LJMP DK2NK6: CJNE A,0BH,NK7MOV KEYBUF,6LJMP DK2NK7: CJNE A,07H,NK8MOV KEYBUF,7LJMP DK2NK8: NOPDK2:MOV A,KEYBUFMOV DPTR,TABLEMOVC A,A+DPTRMOV P0,AMOV A,KEYBUFMOV B,2MUL ABMOV TEMP,AMOV DPTR,TABLE1MOVC A,A+DPTRMOV STH0,AMOV TH0,AINC TEMPMOV A,TEMPMOVC A,A+DPTRMOV STL0,AMOV TL0,ASETB TR0DK2A: MOV A,P3ANL A,0FHXRL A,0FHJNZ DK2ACLR TR0NOKEY2:MOV P3,0FFHCLR MOV A,P3ANL A,0FHXRL A,0FHJZ NOKEY3LCALL DELY10MSMOV A,P3ANL A,0FHXRL A,0FHJZ NOKEY3MOV A,P3ANL A,0FHCJNE A,0EH,NK9MOV KEYBUF,8LJMP DK3NK9: CJNE A,0DH,NK10MOV KEYBUF,9LJMP DK3NK10: CJNE A,0BH,NK11MOV KEYBUF,10LJMP DK3NK11: CJNE A,07H,NK12MOV KEYBUF,11LJMP DK3NK12: NOPDK3:MOV A,KEYBUFMOV DPTR,TABLEMOVC A,A+DPTRMOV P0,AMOV A,KEYBUFMOV B,2MUL ABMOV TEMP,AMOV DPTR,TABLE1MOVC A,A+DPTRMOV STH0,AMOV TH0,AINC TEMPMOV A,TEMPMOVC A,A+DPTRMOV STL0,AMOV TL0,ASETB TR0DK3A: MOV A,P3ANL A,0FHXRL A,0FHJNZ DK3ACLR TR0NOKEY3:MOV P3,0FFHCLR MOV A,P3ANL A,0FH