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When the human to invent the computer, the life of human to achieved a biggest level of progression. the people could use the computer to all sections such as the science, the military, the education, and the daily life... I'm a layfolk in the world so I just use the computer in my simple life, but I think this is enough. the computer's presence could to curtail the distances of two different places. The people use this way to communicate with family or friend that they think very convenient. therefore , the computer is one of most important things for human development.

