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- A pocket-sized electronic computing device
- for performing numerical calculations. It can
- add, subtract, multiply, and divide; many
- also have squares, roots, and advanced
- trigonometric and statistical functions.
- Input is by a small keyboard and results are
- shown on a one-line screen which is typically
- a liquid crystal display (LCD). The first
- electronic calculator was manufactured by the
- Bell Punch Company, USA, in 1963.
-