@siritori 参考書おすすめしときますねー。
計算機械 (1953年) (共立全書〈第57〉) 城 憲三
http://www.amazon.co.jp/dp/B000JBAMUS
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Replying to @siritori1 reply 0 retweets 1 like
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Replying to @siritori
@siritori@yojiro えりっくさんが機械式計算機を所望と聞いて http://www.bbc.com/news/technology-11530905 …1 reply 1 retweet 1 like
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