Math in Computing

Mechanical and Electronic Calculating Devices

What is an electronic calculator?

Most people nowadays are familiar with electronic calculators: small, battery-powered digital electronic devices that perform simple arithmetic operations and are limited to handling numerical data. Data are entered using a small keypad on the face of the calculator; the output (or result) is most commonly a single number on an LCD (Liquid Crystal Display) or other display. It took a long time to go from the electronic motor-driven mechanical calculator to the electronic calculator. In 1961, the company Sumlock Comptometer of England introduced the ANITA (A New Inspiration To Arithmetic), the first electronic calculator.


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