Computer history | Computer before Year 1940

This time wanna to tell you about computer history. how about computer history and whom are they that have improve the technology about computer, until the people now can finish their work easily. so, i think very important for knowing the computer history.

Historical development of computer science began with the development of mathematics. Starting with the use of human fingers, and then create Abakus tool that can do simple arithmetic operations.

Then in 1617, John Napier has revealed sifir logarithm and the tool is called Napier bones that can perform various calculations figures.

Then Blaise Pascal created the first mechanical calculator in 1642 that operates with a gear on the wheel and then has been developed by William Leibnitz. In the year 1816 Charles Babbage was also constructing the difference engine which was able to complete the calculation sifir mathematics problems such as logarithm of the mechanical right up to twenty digits. This machine also has been using a kind of "card" as an input, to save the "file" data to do calculations automatically and permanently remove the output in the form of prints on paper. Then he has to give attention to the analytical engine also.

"card" is the first time have been used as a predictive tool in the textile industry in the creation of automatic loom Jecquard Joseph in the year 1801.
Herman has Hoolerith popularize the use of "card" as a means of input data that has been widely used in America in 1887. Howard Aiken introduced the use of machine electromechanical called the "Mark 1" in the year 1937, electronic and mechanical. This machine can finish the problem of trig functions in addition to the calculation, the calculation was done before the machine is.

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