| anita-calculators.info | |
| 网站标题： | Bell Punch Company & Anita Calculators |
| 网站简介： | Brief history of the Bell Punch Company and the development of the Anita calculator: the worlds first desktop electronic calculator. |
| 关键字： | Calculator old first electronic comptometer ANITA Bell Punch Rockwell Uxbridge Portsmouth Nixie cold cathode dekatron adder adding machine sumlock |
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