00297nam a2200109 a 450000500170000002000150001708200200003210000210005224500620007326000340013530000180016920251203091724.0  a0074601504  a005.26,bD, HAL  aHall, Douglas V.  aMicroprocessors and interfacing: Programming and Hardware  aDelhibTata McGraw-Hillc1986  avi,554p, 26cm