It was a calculator that you fed numbers by turning dials. ... 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. ... In 1890 Herman Hollerith and James Powers for the census developed a devise that could read information on cards without anyone intermediation. ...

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