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      Knowledge is Power

      Scientific American May 1973

      The Amateur Scientist, May 1973

      Microelectronic flip-flops and NAND gates add up to a high-speed counter

      • By C. L. Stong on May 1, 1973

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      More in the May 1973 issue of Scientific American
      • 50 and 100 years ago, May 1973
      • Cryptography and Computer Privacy
      • The Authors, May 1973
      View Full Contents
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