Inventions

Mesopotamian's

3500–3350 BC

Was intended to rotate on an axial bearing

Bigger and more steady

Helps transport me places

Steve Jobs

October 21,2012

It was originally used only for music

It has gotten smaller and easyer to use

It is fun to use

Alan E. Bell

1995

The picture was not very clear

Has a better picture now

It is easy to carry around

Richard Drew

1942

Originally used for rapping cable

There are more colors and prints now

Easy and fun to use

Michael Cronan

November 19, 2007

It was less efficient

It has gotten more effisiant

It is easy to read

Francisco Salva Campillo

1804

Originally string and 2 paper cups

It has become portable

I use it everyday