1. Gottfried Wilhelm von Leibniz
By Jennifer Chlam and Nora Scahel

2. Leibniz (1646-1716) German philosopher and mathematician
His father was a professor of philosophy at the University of Leipzig
Latin and Greek studies
Sent on a diplomatic mission to Paris by the Elector of Mainz
Center of learning
Met mentor Christiaan Huygens
Father died at age 6. mother died at age 18. He was raised Lutheran. Father’s library and books. Cared more for philosophy than math, and had a poor math background. He made most of his mathematical discoveries during his four year stay in Paris.

3. Stepped Reckoner
First Calculating machine that could add, subtract, multiply, and divide (1673)
stepped-drum design
Became the basis of successful calculator designs for 275 years. It enabled a single gear to represent any digit from 0 to 9 in just one revolution

4. Integrals and Calculus
He invented the notation for the Integral that we use today
He discovered calculus at the same time Newton did
Product Rule, also known as Leibniz’s Rule

5. Binary Number System System based on powers of two Two digits are used
0 is false, and 1 is true
Theoretical calculator with tubes and marbles using Binary.