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

Steel ink pen is said to have been developed in Birmingham, England.

1822

First mechanical computer invented by Charles Babbage.

1825

The element: aluminum :is discovered by Hans Christian Oerosted.

1834

Braille is invented by Louis Braille.

1835

The Morse Code is invented by Samuel F.B. Morse.

1837

First practical telegraph invented by Samuel F.B. Morse.

1859

Lead acid rechargeable battery invented by Gaston Plante.

1876

Telephone invented and demonstrated by Alexander Graham Bell.