Contents 1 Introducing the Early Digital Thomas Haigh 2 Inventing anAnalog Past and a Digital Future inComputing..... Ronald R. Kline 3 Forgotten Machines: The Need for a New Master Narrative. Doron Swade 4 Calvin Mooers, Zatacoding, and Early Research on Information Retrieval Paul E. Ceruzzi 5 Switching the Engineer's Mind-Set to Boolean: Applying Shannon's Algebra to Control Circuits and Digital Computing (1938-1958) Maarten Bullynck 6 The ENIAC Display: Insignia of a Digital Praxeology Tristan Thielmann 7 The Evolution of Digital Computing Practice on the Cambridge University EDSAC, 1949-1951 Martin Campbell-Kelly 8 The Media of Programming. . . Mark Priestley and Thomas Haigh I 69 87 19 41 101 tt7 135 xi