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1° Generation: (Vacuum Tubes)
The first computer systems used vacuum tubes for circuitry and magnetic drums for memory, and were often enormous, taking up entire rooms.These computers were very expensive to operate and in addition to using a great deal of electricity, the first computers generated a lot of heat, which was often the cause of malfunctions. -
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2° Generation: (Transistors)
The world would see transistors replace vacuum tubes in the second generation of computers.The transistor was invented at Bell Labs in 1947 but did not see widespread use in computers until the late 1950s.The transistor was far superior to the vacuum tube, allowing computers to become smaller, faster, cheaper, more energy-efficient and more reliable than their first- generation predecessors. -
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3° Generation: (Integrated Circuits)
The development of the integrated circuit was the hallmark of the third generation of computers.Transistors were miniaturized and placed on silcon chips called semiconductors, which drastically increased the speed and efficiency of computers Instead of punched cards and printouts, users interacted with third generaticn computers through keyboards and monitors and interfaced with an operating system. -
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4° Generation: (Microprocessors)
The microprocessor brought the fourth generation of computers, as thousands of integrated circuits were built onto a single silicon chip. What in the first generation filled an entire room could nowfit in the palm of the hand. The Intel 4004 chip, developed in 1971, located all the components of the computer--from the central processing unitend memory to input/output controls-on a single chip In 1981 IBM introduced its first computer forthe home user, and in 1984 Apple introduced the Macintosh. -
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5° Generation: (Artificial Intelligence)
Fifth generation computing devices, based on artificial intelligence,are still in development, though there are some applications, such as voice recognition, that are being used today The use of parallel processing and superconductors is helping to make artificial intelligence a reality.Quantum computation and molecular and nanotechnology will radically change the face of computers in years to.