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Harvard Computation Laboratory

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In the summer of 1944, at a dedication ceremony at Harvard's Cruft Laboratory, one of the world's first automatic digital calculating machines was unveiled to the public. The machine was the Automatic Sequence Controlled Calculator, more commonly known as the Harvard Mark I. The staff of the Harvard Computation Laboratory was unprepared for the interest which news of the machine's dedication touched off, and in response to many inquiries they arranged for the publication of this Manual of Operation.