1. History of Mechanical Computing ? Why does it matter?  Computers were designed to “compute”  Solve mathematical computations  Not a new idea

2. The Abacus.... right ?

3. Ancient -  Mesopotamia  Egypt  Greek  Roman  Chinese Modern -  Korean  Japanese  Russian The Abacus Use throughout History

4. Enduring  Small changes (mostly)  Grooves vs. wires Encompassing  Empires and countries  Same basic idea A good idea?  2700 BC – 1900 AD The Abacus Importance in History

5. Teaching tool  Numeric System  Arithmetic Calculator  Hand held  Tool to aide humans The Abacus Importance in History

6. Calculator  Hand held  Tool to aide humans Compute  Early computers  Example of how tools for computing can aid humans ENIAC  Electronic Numerical Abacus is more like it The Abacus Importance in Electronic Computing

7. Maths  Teaching tool  Teach concept; idea  Not just counting anymore Precursor  Earliest and longest lasting “computer”  Tools for computing The Abacus Huh ! What is it good for ?