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Abacus
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Blaise Pascal - Creates first basic mechanical calulator
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William Seward Burroughs - First commercially successful calculator created
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Otto Steiger - "Millionaire machine
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The world’s first graphing calculator was invented in 1985 by Casio. It was still primitive compared to today’s calculators, only having an eight line dot matrix, a black and white display, and less than half a kilobyte of memory. But, it proved the concept with its 82 scientific functions and the enlarged display.
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In 1993 IBM Simon invented the Personal Communicator. It was a cell phone with an added PDA functions like email, calendar, and a calculator. It was the beginning of calculators in cell phones. This made calculators widely accessible and available for everyone to use
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The first handheld calculator is developed by Texas Instruments Inc.Texas instruments utilized the use of Integrated circuit to create the first calulator that is smaller than about the size of a desktop. Cite:
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In the mid 2000s, many of the modern smart phones were introduced and with them came a new way of calculation. Calculators are now in every phone, every tablet, and in every app store. Calculators now come in many different variations, from a 1$ simple calculator to a 600$ fully featured graphing calculator. This has made calculation available to nearly everyone.
