00465nam a2200121Ia 4500008004100000024005600041082001900097100007700116245006000193260002500253600003200278650003300310250506s9999    xx            000 0 und d  a02A-050-CE, 02A-071-CE, 02A-032-CE & 02A-006-CE  a621.385072 ASI  aMuhammad Asif Siddiqui, Sufyan Shaikh, Tabish Iqbal & Reema Tariq Mughal 0aMicrocontroller Based Private Automatic Branch Exchange  aKarachi:bUIT,c2002  aComputer System Engineering  aBachelor of Engineering (BE)