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Last updateWed, 11 Oct 2017 11am


Computers: Then and Now

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Each generation of computers is characterized by a major technological development that changes the way computers operate, resulting in

increasingly smaller, cheaper, more powerful, efficient and reliable devices with decreasing energy consumption and lesser generation of heat.

First Generation (1940-1956): Vacuum Tubes

A vacuum tube was fragile glass device that used filaments as a source of electrons and could control amplify electronic signals. These computers could perform computations in milliseconds but were enormous in size, taking up almost and entire room. They were very expensive to operate and use lot of electricity and produce lot of heat resulting in malfunctioning.

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