history of computers created by mrs. gile based on information taken from computers made friendly
TRANSCRIPT
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History of Computers
Created by Mrs. Gile
Based on information taken from Computers Made Friendly
![Page 2: History of Computers Created by Mrs. Gile Based on information taken from Computers Made Friendly](https://reader036.vdocuments.us/reader036/viewer/2022070305/5515636f55034685568b5bf8/html5/thumbnails/2.jpg)
1642
19 year old Frenchman named Blaise Pascal invents a machine that can add and subtract. He called the machinge the Pascaline.
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1673
• A German by the name of Gottfried Leibniz invents the Leibniz Calculator. This machine could add, subtract, multiply and divide.
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1823
• An Englishman; Charles Babbage designed the Difference Engine and the Analytical Engine. Because of his contributions, Babbage is known as the Father of Computers.
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1890
• Herman Hollerith became the first American to contribute to the invention of comptuers. He invented the Tabulating Machine. He began a company called International Business Machines.
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1940
• Vacuum Tubes controlled the flow of electricity in a computer. They got very hot and would burn out. When this happened, the computer stopped working.
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1950
• Transistors replaced vacuum tubes. Transistors were much smaller, and were more reliable than vacuum tubes.
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1960
• The first integrated circuit was designed. It combines all the electronic parts a computer needs to run in one small place – a chip. It is about the size of your fingernail.
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1974
• A microprocessor contains not only electronic circuits but also memory storage for a computer. Today microprocessors are small enough to fit into machines that fit in the palm of your hand.