1. PAscal
He withdrew so he could spend time educating his children because he disagreed with the education given to children at school. ... By the time he was seventeen he wrote an essay on conic sections, which is, a work in projective geometry that contained a theorem on conic sections that was named after him. At the age of eighteen Pascal invented the adding machine, which is now known as the calculator. ... The principles of this adding machine were extended into a hand-cranked calculator during the 18th and 19th century, and by the 20th century, the electronic computer began to replace th...
- Word Count: 598
- Approx Pages: 2
- Grade Level: High School