程序，proteus仿真一应俱全 部分程序 ORG 1000H STAR: MOV DPTR,#0FE00H MOVX @DPTR,A JNB P3.0,AA MOVX A,@DPTR MOV 20H,A AA: MOV DPTR,#TAB MOV A,20H MOV B,#3 MUL AB ADD A,DPL MOV DPL,A MOV A,B ADDC A,DPH MOV DPH,A MOV A,#0 MOVC A,@A