Computer science development of sophisticated computing equipment. Wilhelm Schickard designed and constructed the first working mechanical calculator in 1623. In 1673, Gottfried Leibniz demonstrated a digital mechanical calculator, called the Stepped Reckoner. He may be considered the first computer scientist and information theorist, for, among other reasons, documenting the binary number system. In 1820, Thomas de Colmar launched the mechanical calculator industry when he released his simplified arithmometer, which was the first calculating machine strong enough and reliable enough to be used daily in an office environment. Charles Babbage started the design of the first "automatic mechanical calculator", his Difference Engine, in
Ted Lewis (computer scientist) he moved to the Eastman Kodak Company, where he directed the Digital Business Development division. In his retirement from industry in 2002, he became professor at the Naval Postgraduate School. A columnist for "IEEE Internet Computing", he has contributed pieces to "Scientific American" and "Upside". He has served two stints of Editor-in-Chief, at "IEEE Software" from 1987 to 1990 and at "Computer" from 1993 to 1994. Lewis has written or co-authored 30 books, including: Ted Lewis (computer scientist) Theodore Gyle (Ted) Lewis (born 1941) is an American computer scientist and mathematician, and professor at the Naval Postgraduate School. Lewis received