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- ABSTRACT
- The author and his copartners made "marble computer" in 1968. Only
three-bit adder was made. However, used technique was similar to actual
electronic computers, e.g. the use of binary representation and the use
of timing pulse for processing carries. Each bit was expressed by
presence of a steelball, and its falling is controlled by flaps. This
kind of computer may still be useful to recognize logical action of
computers.
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NISHIMURA, Kankuro, Kazuo (nishimura@komazawa-u.ac.jp)
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