Be­fore Moore

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Be­fore mi­cro­pro­ces­sors com­put­ers were built from small in­te­grated cir­cuits. Be­fore that, in­di­vid­ual tran­sis­tors were wired to­gether, and the very first stored-pro­gram com­put­ers used valves. The trend from 1971 on­wards also holds true for all these pre­ced­ing tech­nolo­gies, in­clud­ing fa­mous names such as the Colos­sus and the Manch­ester Baby. Even the elec­tro-me­chan­i­cal Bell Cal­cu­la­tor Model I, launched in 1940 and us­ing re­lays, fits the trend. Only when we go back to the ear­lier purely me­chan­i­cal cal­cu­la­tors, do we find a slower but still ex­po­nen­tial growth.

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