Continuous Systems and Discrete Systems:

Continuous Systems:- 

 Continuous systems are those types of systems in which input and output signals are the same at both the ends. In this type of system, variable changes with time and any type of variation is not found in the input and output signal. In response to the input signal, a continuous system generates an output signal. 

 

Consider, we have two variable x and y and both vary with time. Continuous signals are represented within parenthesis().

Discrete Systems:-

In discrete systems, both input and output signals are discrete signals. The variables in the discrete systems vary with time. In this type of system, the changes are predominantly discontinuous. The state of variables in discrete system changes only at a discrete set of points in time.

The variables in the discrete system are x and y and they are always presented in square brackets [ ].