外文资料原文Progress putersPrestige Lecture delivered to IEE, Cambridge, on 5 February 2004Maurice puter LaboratoryUniversity of CambridgeThe first stored puters began to work around 1950. The one we built in Cambridge,the EDSAC was first used in the summer of early puters were built by people like myself withvarying backgrounds. We all had extensive experience in electronic engineering andwere confident that that experience would stand us in good stead. This proved true,although we had some new things to learn. The most important of these was thattransients must be treated correctly; what would cause a harmless flash on the screenof a television set could lead to a serious error in far puting circuits were concerned, we found ourselves with anembarass de richess. For example, we could use vacuum tube diodes for gates as wedid in the EDSAC or pentodes with control signals on both grids, a system widelyused elsewhere. This sort of choice persisted and the term families of logic came intouse. Those who have worked in puter field will remember TTL, ECL andCMOS. Of these, CMOS has now e those early years, the IEE was still dominated by power engineering and wehad to fight a number of major battles in order to get radio engineering along with therapidly developing subject of in the IEE light current recognis
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