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Logic simulation
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Patent number 4,891,773
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Issue date Jan 2, 1990
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Hitachi, Ltd.
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Kimio Ooe
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G06 - COMPUTING CALCULATING COUNTING
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Address translator
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Patent number 4,802,084
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Issue date Jan 31, 1989
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Hitachi, Ltd.
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Hiroshi Ikegaya
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G06 - COMPUTING CALCULATING COUNTING
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Data processing system
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Patent number 4,488,221
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Issue date Dec 11, 1984
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Hitachi, Ltd.
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Kenichi Wada
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G06 - COMPUTING CALCULATING COUNTING