Inventors has tried to perfect a 'sum machine' for many years, resulting in the invention of the pocket calculator in 1966. Its tempting to let calculators do all the ' head work' for you, but you still have input the numbers correctly!
Who invented the modern calculator?
Several inventors created ' adding devices'. Blaise Pascal devised a machine in 1642, which worked by turning dials, and Charles Babbage invented a 'computer' in 1834, which was a huge machine for solving maths problems. However, it was US company Texas Instrument who brought the modern, hand-held calculator to the market in 1967.
Blaise Pascal
Charles Babbage
FACT BYTES
Scientist at IBM's research laboratory in Zurich, Switzerland have desingned a diameter of less than 0.000001mm (39/100 in.)
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