Analog Computer

A computer that can measure continuous physical quantities such as electrical current,length,temperature,pressure,shaft rotations,voltage etc. and convert them to analogous decimal digits, and them realizes an arithmetic or logical operation and accomplished result is visible  by metre or indicator is called analog computer.It is costly and it is also used specially.It can only understand analog signal.Its main function is to solve differential equation.Besides this, it is used in different laboratories to control the speed of rocket and missile,for forecasting by making artificial data etc.Speedometer of motorcar,thermometer etc. are the ideal examples of analog machine.Analog computers are used mainly for scientific and engineering purposes because they deal with quantities that very constantly.These types of computers give approximate results only.

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Types of computers

On the basis of structure,computers are classified in three types as-                                                         
1.Digital  Computer.(A majority of the computers used in the world today are digital)

2.Analog  Computer.(This type of computers give approximate results only)

3.Hybrid  Computer.(The best combination of digital and analog computer is called hybrid computer)

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