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简答题 阅读下列程序段,注释指令中计算符LENGTA的取值.  DATA     SEGMENT  A        DW     10 DUP(?), 1234H,  20 DUP(?)  B        DB    ‘ABCDEF’,6 DUP(?)  C        DW     10, 20 DPU(?)  D        DW     5 DUP(3 DUP(2),5)  DATA     ENDS                ┆  ①       MOV     AX, LENGTH  A  ②       MOV     BX ,LENGTH  B  ③       MOV     CX ,LENGTH  C  ④       MOV    DX ,LENGTH  D
  • ①10→AX;
    ②1→BX;
    ③1→CX;
    ④5→ DX.
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