THEN TO NOW

SMOKE SIGNALS

Invented by Polybius in 150 B.C

People Have Noticed A Danger Signal

PHONOGRAPH

Invented by Thomas Edison in 1877

A PHONOGRAPH SENDING SIGNALS

CELLULAR PHONES

Invented by Douglas Ring and Rae Young.

EMAIL

Invented in 1994 (many, many people took part)

Hello Mummy howAre you today???

AN APPLE COMPUTER AND KEYBORAD

•150 B.C – Polybius created smoke signals.

•1831 - Joseph Henry proposes and builds telegraph.

•1835 - Samuel Morse develops the Morse code.

•1876 – Alexander.G Bell & Thomas.W made an electric telephone.

•1877 - Thomas Edison invents the phonograph.

•1947 - Douglas Ring and Rae Young invented cellular phones.

•1994 - Internet organization created.

TIMELINE OF COMMUNICATION

THAT IS THE TIMELINE OF COMMUNICATION...

THANKS FOR WATCHING!!!