00291nam a2200121Ia 4500008004100000100002100041245002500062250000900087260002300096260000900119300000700128650003400135221231s9999    xx            000 0 und d  aFloyd , Thomas L 0aDigital Fundamentals  a3 rd  bUniversities Press  c1986  apv  aElectronics and Communication