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History of Computers Created by Mrs. Gile Based on information taken from Computers Made Friendly.

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Presentation on theme: "History of Computers Created by Mrs. Gile Based on information taken from Computers Made Friendly."— Presentation transcript:

1 History of Computers Created by Mrs. Gile Based on information taken from Computers Made Friendly

2 1642 19 year old Frenchman named Blaise Pascal invents a machine that can add and subtract. He called the machinge the Pascaline.

3 1673 A German by the name of Gottfried Leibniz invents the Leibniz Calculator. This machine could add, subtract, multiply and divide.

4 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.

5 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.

6 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.

7 1950 Transistors replaced vacuum tubes. Transistors were much smaller, and were more reliable than vacuum tubes.

8 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.

9 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.


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