Hello There,<br /><br />In this tutorial, I am going to teach you about the followings;<br /><br />INTRODUCTION TO COMPUTER<br />Evolution Of Computers<br />(i) Mechanical Era (Dark Age)<br />(a) Abacus (3000 B.C.)<br />(b) Napier's Bones (1612 A.D.)<br />(c) Slide Rule (1622 A.D.)<br />(d) Pascaline or Pascal's Calculator (1642 A.D.)<br />(e) Leibniz's Calculator (1694 A.D.)<br />(f) Babbage's Difference and Analytical Engines (1822 and 1837 A.D.)<br /><br />Video Link Of Pascal's Calculator: https://www.youtube.com/watch?v=3h71HAJWnVU&t=96s
