Confusion regarding discrete signal value?

1. What is discrete value signal?
2. How do you know if a signal is discrete?
3. What is an example of a discrete signal?
4. How can you tell the difference between continuous and discrete signals?

What is discrete value signal?

A discrete-time signal is a sequence of values that correspond to particular instants in time. The time instants at which the signal is defined are the signal's sample times, and the associated signal values are the signal's samples.

How do you know if a signal is discrete?

A discrete time signal is denoted s(n) or sn, where n is an integer and the value of s can be real or complex. It comes from a sampling or discretization of a continuous signal s(t) with t = n∆, where ∆ > 0 is a discrete time step known as the sampling interval. A discrete signal is called digital.

What is an example of a discrete signal?

Discrete-time signal: the variable of time is discrete. The weekly Dow Jones stock market index is an example of discrete-time signal.

How can you tell the difference between continuous and discrete signals?

A signal, of which a sinusoid is only one example, is a sequence of numbers. A continuous-time signal is an infinite and uncountable set of numbers, as are the possible values each number can have.