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"10,000 Operations per Second" (October 15, 1939)

On October 15, 1939 Konrad Zuse’s associate, Helmut Schreyer, wrote a memorandum concerning the Z2, Rechnische Rechenmachine (unpublished at the time), in which he also stated thast it would be possible to build a computer with vacuum tubes that would process “10,000 operations per second.”