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- Four main functions: Addition (+), Subraction (-), Multiplication (X), Division (/)
- LED or LCD display of 8-10 digits
- Battery or solar power
- On and Off buttons
- Can be found in cell phones and wrist watches
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Calculators are electronic devices used to perform mathematical equations. Typically, calculators are used solely for this purpose and are built in to devices like computers and cell phones.
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A Brief History of Calculators
The original calculator was a wooden frame with sliding beads called an abacus. In 1822, Charles Babbage created a mechanical calculator which he called a "difference engine." The idea went though various designs and formats over the next several decades. During the late 1940s, the first main-frame computers were developed. This technology would lead to developing hand-held electronic calculators.In 1957, IBM released the first commercial all-transistor calculator. The IBM 608 was housed in large cabinets and was priced at around $80,000. Casio would release the "compact" calculator in 1957.
Until 1970, calculators were the size of desktops. By this time, pocket calculators had been created, but were still very expenisive luxury items. Calculators were made affordable in the 1980s and the technology continued to improve.
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Calculator Questions
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How is yield to maturity calculated on a corporate bond in secondary market? 1 AnswerUsually it is stated on your contract or certificate your holding... Usually you will get a specific interest for your money quarterly, semianually or whichever... read more -
i need to calculate my footprint, how can i do it, please help? 2 AnswersSince @psynopsis has already asked for clarification, I'm just gong to make one assumption here. Do you mean your carbon footprint? There are many online ca... read more -
How Earnings in Pages managed is calculated? 1 AnswerMahalo splits the Google Adsense revenue with you 50/50 on a per click basis. The answers to this question from @dcanswerer sum things up nicely. Is the Adsen... read more
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Featured Mahalo Topics
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On Twitter powered by Twitter
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RT @owlcity: Whenever you feel lost and alone, always remember your calculator is something you can count on.
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how to do math without a calculator!! :(
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New software: Flash Bowling Score Calculator 0.91 (http://4usoftware.com/?p=674)
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aunt sending me to go take calculator but going home myself though
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good bye to friends special runs....... sorry can't add that much without a calculator.
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