Sharad Jaiswal

Posted On: Sep 23, 2020

Signalling is a source of energy that used to convey the information. Information can be shared by means like sounds, action, gestures etc.

**Based on their amplitude: -**

**Analog Signal**– The value of the amplitude in the analog signal has infinite value.**Digital Signal**– The value of the amplitude in the Digital signal can only have finite and discrete values.

**Based on their horizontal axis (time axis) of the signal:-**

**Continuous-time signal**- It is a type of signal whose value (amplitude) exists for every fraction of time t.**Discrete-time signal**- It exists only for a discrete value of time t.

**Based on “determination by mathematical equation:-**

**Deterministic Signal**: These signals are those signals that are determined by a mathematical formula.**Non- deterministic Signal**: These signals are random and they are not defined by any mathematical equation.

**Based on symmetry:-**

**Even signals**– These signals are symmetric around a vertical axis**Odd signals**– These signals are symmetric about the origin.

**Based on power & Energy:-**

**Energy Signal-**These signals have finite energy.**Power signal**– These signals have finite power.

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