Calculators are something that are used to calculate our daily life mathematical calculations, in a small electronic device which has buttons and small display section.
The first calculator that was made around 2500 B.C. in Sumeria was the abacus. The abacus was table of successive columns with beads or stones representing a single unit which was used for addition or subtraction. other cultures tried to make it more advanced, For example, Chinese put beads on wire within a bamboo frame to enhance ease of use. Unfortunately the abacus was not that good to solve multiplication or division so by time it motivated to make enhance calculators in coming era.
2300 BC saw the first appearance of the Sumerian ABACUS
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After millennium of abacus Curt Herzstark invented the first handheld, mechanic calculator in 1945, that he designed in 1938. Large quantities of calculators were produced unit 1970 that Curt invented. When company in japan invented first digital pocket calculator and the demand for the antiquated device faded. Curta calculator invented in 1945 by Curt Herzstark
The invention of smart phone changed a lot of history making calculators. Companies in united states, Such as Texas instrument, adapted the design of the Japanese device, and enhanced it by creating the graphing calculators we know today.
Texas instrument TI-30 Introduced in 1977
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Modern days calculators
Modern calculators often incorporate a general-purpose computing system, but they are often designed to perform specific operations. For example, graphing calculators focus on graph-centered math such as trigonometry and statistics. Also, modern calculators are more portable than most computers, though some personal digital assistants (PDAs) are comparable in size to hand held calculators.In the past, some calculators were as large as today's computers. The first mechanical calculators were mechanical desktop devices, which were soon replaced by electromagnetically desktop calculators, and then by electronic devices using first thermionic valves, then transistors, then hard-wired integrated circuit logic. Today, most calculators are hand held microelectronic devices.
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Scientific calculator are those
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They are always in certain context such
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A desk-model electronic calculators that provides
Printed record of yourcalculations with or without digital dispaly.
Top 5 brands
Top 5 brands
- Texas Instruments Picture credit: https://www.target.com
- Casio Picture credit: https://www.officeworks.com.au
- HP Prime Picture credit: https://www.flickr.com
- Citizen Picture credit: http://calculator.citizen-europe.com/
- Canon Picture credit: https://www.bestbuy.ca/
Some companies in china and other parts of the world are making calculators violating copyrights and using famous trade marks and applying them with low prices. These companies should be sued for violating these laws.
Some customers do not check these qualities and they buy it without knowing the reality of the trade mark real worth.