00503nam a2200157 a 450000500170000002000150001708200150003210000220004724500850006925000120015426000330016630000280019949000650022763000320029263000210032420251203090451.0  a0070230498  a005.1bGEA  aGear, William  C.  aComputer organization and programming: with an emphasis on the personal computer  a4th ed.  aNew YorkbMcGraw-Hill.c1985  axiii, 414p.b22 cm.cPB  aMcGraw-Hill series in computer organization and architecture  aElectronic digital computer  aComputer science