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词条„comptometer“在英语 » 德语中的译文 (跳至德语 » 英语)

comp·tom·eter [ˌkɒmpˈtɒmɪtəʳ, 美 ˌkɑ:mpˈtɑ:mɪt̬ɚ] 名词计算机

comptometer

automatische Zählmaschine

英语

Earlier key driven adding machines, like the comptometer, featured eight or more columns of nine keys, which made them cumbersome and costly and their operators prone to mistakes. en.wikipedia.org

The comptometer, introduced in 1887, was the first machine to use a keyboard which consisted of columns of nine keys (from 1 to 9) for each digit. en.wikipedia.org

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