... parallel wires on which beads are strung. All ordinary math operation could be done on it. Blaise Pascal invented the first mechanical computer in 1642 at the 19. It was a calculator that you fed numbers by turning dials. Pascal built 50 copies of his machine. Only the wealthy owned them. A German man, Gottfried Leibniz added a gearing system to enable ... multiplication on Pascal's computer. Charles Babbage of Great Britain invented the first desktop calculator. It used the same principles of the modern day computer. He worked on it for 10 years, it. The desktop computer was very elabo...

• Word Count: 911
• Approx Pages: 4
• Grade Level: High School