technology history timeline
DESCRIPTION
Technology History Timeline. 2400 BC. The first calculator invented. Called an: abacus. 776 BC. The use of pigeons that can send a message is recorded. 1567. First pencil invented by Conrad Gesner. 1765. Erasers are put on pencils by the Eberhard Company. 1803. - PowerPoint PPT PresentationTRANSCRIPT
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TECHNOLOGY HISTORY TIMELINE
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2400 BC
The first calculator
invented.
Called an: abacus
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776 BC
The use of pigeons that can send a message is recorded.
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1567
First pencil invented by Conrad Gesner
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1765
Erasers are put on pencils by the Eberhard Company
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1803
Steel ink pen is said to have been developed in Birmingham, England.
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1822
First mechanical computer invented by Charles Babbage.
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1825
The element: aluminum :is discovered by Hans Christian Oerosted.
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1834
Braille is invented by Louis Braille.
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1835
The Morse Code is invented by Samuel F.B. Morse.
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1837
First practical telegraph invented by Samuel F.B. Morse.
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1859
Lead acid rechargeable battery invented by Gaston Plante.
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1876
Telephone invented and demonstrated by Alexander Graham Bell.
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