00354nam a2200109Ia 4500008004100000040003800041100001600079245004500095260003200140300001800172653005400190211217s9999    xx            000 0 und d  cJayakar Knowledge Resource Centre  aLedley, R S 0aDigital computer and control engineering  bMcGraw HillaNew Yorkc1960  axxiv, 835p p.  aDigital communication Digital computer simulation