Real Exponential SignalsAn exponential signal or exponential function is a function that literally represents an exponentially increasing or decreasing series.Continuous-Time Real Exponential SignalA real exponential signal which is defined for every instant of time is called continuous time real exponential signal. A continuous time real exponential signal is defined as ... Read More

Static SystemA system whose response or output is due to present input alone is known as static system. The static system is also called the memoryless system. For a static or memoryless system, the output of the system at any instant of time (t for continuous-time system or n for ... Read More

What is Time Scaling?The process of multiplying a constant to the time axis of a signal is known as time scaling of the signal. The time scaling of signal may be time compression or time expansion depending upon the value of the constant or scaling factor. The time scaling operation ... Read More

The property of a system which makes the behaviour of the system independent of time is known as time invariance. Time invariance means that the behaviour of the system does not depend on the time at which the input is applied to the system.Time-Invariant SystemIf the input and output characteristics ... Read More

A signal is defined as a single-valued function of one or more independent variables which contain some information. Examples of signals are electric current and voltage, human speech, etc.Unit Ramp SignalA ramp function or ramp signal is a type of standard signal which starts at 𝑡 = 0 and increases ... Read More

What is a Signal?A signal is defined as a single-valued function of one or more independent variables which contain some information. Examples of signals are electric current and voltage, human speech, etc.Unit Step SignalThe step signal or step function is that type of standard signal which exists only for positive ... Read More

What is a Signal?A signal can be defined in one of the following ways −Anything that conveys information can be termed as a signal.A signal can also be defined as a single valued function of one or more independent variables which has some information.A signal may also be defined as ... Read More

When a signal gives the constant acceleration distinction of actual input signal, such a signal is known as parabolic signal or parabolic function. It is also known as unit acceleration signal. The unit parabolic signal starts at t = 0.Continuous-Time Unit Parabolic SignalThe continuous-time unit parabolic signal is a unit ... Read More

What is a System?In signals and systems, a system can be defined in a number of ways as −A system is defined as a physical device that can produce an output or response for the given input.A system may also be defined as an entity which works on an input ... Read More

Stable System or BIBO Stable SystemA system is called a BIBO (bounded input bounded output) stable system or simply stable system, if and only if every bounded input produces a bounded output. The output of a stable system does not change unreasonably.The stability of a system indicates the usefulness of ... Read More