450)=450"> 450)=450"> 每天18：00准时更新 全文听写，英式拼法 450)=450"> [color=#408080]HINTS Blaise Pascal Gottfried Von Liebnitz the Analytical Engine Charles Babbage Hitler Konral Zuse World War Ⅱ Bell Telephone Laboratories AT & T George Stibitz [/color]
The earliest form of computer was being used over 2,000 years ago and even today it is still being used in some eastern countries. It is the simple abacus, that you may have used when you were in the infants' school. In 1642 a real development in computers came when Blaise Pascal invented the first adding machine. 29 years later Gottfried Von Liebnitz developed a calculator that could both multiply and divide. The world's first working computer, the Analytical Engine, was designed by Charles Babbage in 1834. Babbage believed that his machine could be taught to do mathematical tasks. The dream of a true computer, one that could solve any number of problems, was not realised until the 1930s. In Hitler's Germany, an obscure young engineer named Konral Zuse built a simple computer that could perform a variety of tasks. Its descendants calculated wing designs for the German aircraft industry during World War Ⅱ. At Bell Telephone Laboratories in the US, the research arm of AT & T, a mathematician named George Stibitz built a similar device in 1939 and even showed how it could do calculations over telephone wires. This was the first display of remote data processing.