Sunday, March 28, 2010

What is a computer?


As Webster’s dictionary defines it, it is “any programmable electronic device that can store, retrieve, and process data”
Technology has developed greatly from the time man came to this planet to the 21st century (our world today). We have seen many machines and tools being invented and developed which has helped our world today to be as it is.
It is believed that almost all machines have come up due to two main tools that were invented; these are the lever and the inclined plane. Both these tools were mainly used to help in lifting heavy things. These two tools are believed to be the ground breaking idea that has led to the rise of computers. They convert one type of energy into another. Other simple machines that were made at that time were the following: the wheel, pulley, wedge and screw. After these, more complex tools were made, these tools or machines were made in such a way so as to carry out several purposes. For example, the water pump and the Swiss-army knife. After these many more complex and bettered machines were invented, but none were like the new machine that was invented in the 20th century- ‘THE COMPUTER’
The basic computer started developing in the 1200’s. This machine called the computer did not convert energy as all the other machines, but instead transformed information.

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