The computer is a data processing in accordance with the procedures set electronic equipment. Usually we are talking computer is a PC, by the CPU, motherboard, memory, power supply, chassis, graphics and other components.
Computer science known as the computer is evolved by the early electric calculator. In February 1946, the world's first electronic digital computer, the ENIAC ", used to calculate the trajectory. Moore Institute of Electrical Engineering from the University of Pennsylvania made, but it's a huge volume, covers an area of more than 170 square meters, weighing about 30 tons, consumed 100 kilowatts of electricity. Obviously, this computer is costly, inconvenient to use. In 1956, the transistor computer was born, this is the second generation of electronic computers. As long as several large cabinets can only put it, the operation speed also greatly improved. 1959 is the third-generation integrated circuit computer. The first computer invented by John von Neumann (when the computer's computing power equivalent to the calculator now), three of the Treasury, gradually evolved.
Beginning in the 1970s, this is the latest stage of computer development. 1976, made by the LSI and VLSI, "Clay 1" so that the computer has entered the fourth generation. LSI invention, the computer constantly toward miniaturization, miniaturization, low power, intelligent, systematic direction of replacement. 1990s, the computer towards "smart" development, to create a computer similar to the human brain, can be thinking, learning, memory, and network communications.
Into the 21st century, computer notebook, miniaturization and specialization operations per second speed over 1 million times, not only easy to operate, inexpensive, and can replace the part of the mental work of the people, even people in some ways extends intelligence. As a result, today's micro-computer image called a computer. The world's first PC by IBM in 1981.
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