康普托計算器
Sign in to savethumb|upright=1.2|Model ST (1930s) thumb|upright=1.2|Prototype of the first all-electronic desktop calculator marketed by of the United Kingdom|UK
Wikidata facts
- Subclass of
- mechanical calculator
- Country of origin
- United States
- Image
- Comptometer Model A.jpg
Show 3 more facts
- Commons category
- Comptometer
- discoverer or inventor
- Dorr Felt
- time of discovery or invention
- 1887-00-00
Sources (1)
via Wikidata · CC0