21 以唯讀記憶體(read-only memory, ROM)來實作兩個四位元數字(4-bit number)X = X3X2X1X0和 Y = Y3Y2Y1Y0的乘法運算。若將X和Y連接至ROM之八位元位址A = A7A6A5A4A3A2A1A0,使A7A6A5A4 = X3X2X1X0、A3A2A1A0 = Y3Y2Y1Y0,則位址 (10010010)2 所儲存的內容應為:
(A) 00010010
(B) 01010010
(C) 10010010
(D) 11010011
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統計: A(15), B(6), C(14), D(3), E(0) #1246556
統計: A(15), B(6), C(14), D(3), E(0) #1246556