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central processing unit

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Make an IC that tells other ICs what to do

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Make an IC that tells other ICs what to do

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Make a circuit, but make a smaller circuit

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Make a circuit, but make a smaller circuit

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Now you have an IC

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Those computers work on a digital signal. These signals are used to represent data as a sequence of discrete values

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Those computers work on a digital signal. These signals are used to represent data as a sequence of discrete values

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They are the computers that perform various computational as well as some other general purpose tasks.

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Unreliable
Limited memory
Performance is comparatively low

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You can use resistors, inductors, capacitors etc

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You can use resistors, inductors, capacitors etc

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The analogue computer works on a continuous signal

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The analogue computer works on a continuous signal

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Scientific and technological progress of the 20-th century

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Scientific and technological progress of the 20-th century

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They were first used at the time of 1950’s – 1960’s.