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The abacus (plural abaci or abacuses), also called a counting frame, is a calculating tool used primarily in parts of Asia for performing arithmetic processes.
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Name:Blaise Pascal
Year:1623-1662
Place:France
Job: French mathematician, physicist, inventor, writer and Christian philosopher.
Info: He invented the first calculating machine -
Name: pascaline
Year: 1642
Info: it could add and subtract two numbers directly and multiply and divide by repetition. -
Name: Gottfried Wilhelm Leibniz
Year:1646-1716
Place: Germany
Job: German mathematician and philosopher
Info: He developed a calculator as subtract and multiply -
Name: stepped Reckoner
Year:1694
Info: The first calculator that could perform all four arithmetic operations: addition, subtraction, multiplication and division.[2] -
Name: Charles Babbage
Year:1791-1871
Place: England
Job: English mathematician, philosopher, inventor and mechanical engineer who originated the concept of a programmable computer
Info: He made a calculate machine that perform six decimals -
Name: Ada Lovelace
Year:1815-1852
Place: England
Job: English mathematician
Info: She created a program for the analytical engine -
Name: difference engine
Year:1822
Info: calculate polynomials by using a numerical method called the differences method -
Name: Herman Hollerith
Year:1860-1929
Place: USA
Job: American statistician
Info: developed a mechanical tabulator based on punched cards to rapidly tabulate statistics from millions of pieces of data. He was the founder of one of the companies that later merged and became IBM -
Name: Thomas Harold Flowers
Year:1905-1998
Place: England
Job: English engineer
Info: During World War II, Flowers designed Colossus, the world's first programmable electronic computer, to help solve encrypted German messages. -
A transistor is a semiconductor device used to amplify and switch electronic signals and electrical power. It is composed of semiconductor material with at least three terminals for connection to an external circuit.
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Name: Alan Turing
Year: England
Place:1912-1954
Job: British mathematician, logician, cryptanalyst, and computer scientist
Info: Turing called Enigma now decode the password of the Germans were at the time
Name: Thomas Harold Flowers
Year:1905-1998
Place: England
Job: English engineer
Info: During World War II, Flowers designed Colossus, the world's first programmable electronic computer, to help solve encrypted German messages. -
In electronics, a vacuum tube, electron tube (in North America), thermionic valve, tube, or valve is a device controlling electric current through a vacuum in a sealed container.
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Name: Steve Wozniak
Year:1950~
Place: USA
Job: American computer engineer and programmer
Info: He invented the Apple I computer and the Apple II computer in the 1970s. These computers contributed significantly to the microcomputer revolution -
An integrated circuit or monolithic integrated circuit (also referred to as IC, chip, or microchip) is an electronic circuit manufactured by lithography, or the patterned diffusion of trace elements into the surface of a thin substrate of semiconductor material.
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Sir Timothy John "Tim" Berners-Lee is a British computer scientist and the inventor of the World Wide Web. He made a proposal for an information management system in March 1989, and on 25 December 1990, with the help of Robert Cailliau and a young student at CERN, he implemented the first successful communication between a Hypertext Transfer Protocol (HTTP) client and server via the Internet.
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Name: Bill Gates
Year:1955~
Place: USA
Job: American business magnate and philanthropist
Info: He madethe world’s largest personal-computer software company,Microsoft -
A microprocessor incorporates the functions of a computer's central processing unit (CPU) on a single integrated circuit (IC), or at most a few integrated circuits.
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Nintendo's first venture into the video-gaming industry was securing rights to distribute the Magnavox Odyssey video game console in Japan in 1974.
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The IBM Personal Computer, commonly known as the IBM PC, is the original version and progenitor of the IBM PC compatible hardware platform. It is IBM model number 5150, and was introduced on August 12, 1981. It was created by a team of engineers and designers under the direction of Don Estridge of the IBM Entry Systems Division in Boca Raton, Florida.
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The Game Boy is an 8-bit handheld video game device developed and manufactured by Nintendo.
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The Nintendo DS Lite is a dual-screen handheld game console developed and manufactured by Nintendo.
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The Nintendo 3DS is a portable game console produced by Nintendo. The autostereoscopic device is able to project stereoscopic 3D effects without the use of 3D glasses or any additional accessories.
