The document discusses various signal functions used in engineering. It introduces the unit impulse function, which is zero everywhere except at t=0, where it has infinite height and zero width. The unit impulse function is often used as a "switch" to turn signals on and off. The step function is defined as the integral of the unit impulse function. The document then lists unit ramp function, unit rectangle function, exponential signals, and sinc signal but provides no further details about these functions.

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By
Jawaher A.Fadhil
B.SC in Electronics Engineering
M.Tech in Computer Engineering
2017-2018
University of Duhok
College of Science
CS Department

2. Unit Impulse Function
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Is zero every where except t=0
Has zero width and infinite height

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Often use this function to act as a “Switch” to turn on/off signal.
The step function is just the integral of the unit impulse function.
Unit Step Function
The unit step function u(t) is defined as:

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Unit Ramp Function

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Unit Rectangle Function

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Exponential Signals

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Sinc Signal