Continuous time system and discrete time system

1. What is continuous time system and discrete-time system?
2. What is the difference between discrete system and continuous system?
3. What is continuous time system?
4. What is difference between discrete and continuous signal?

What is continuous time system and discrete-time system?

A discrete system is one in which the state variable(s) change only at a discrete set of points in time. E.g. customers arrive at 3:15, 3:23, 4:01, etc. A continuous system is one in which the state variable(s) change continuously over time. E.g. the amount of water flow over a dam.

What is the difference between discrete system and continuous system?

Discrete model: the state variables change only at a countable number of points in time. These points in time are the ones at which the event occurs/change in state. Continuous: the state variables change in a continuous way, and not abruptly from one state to another (infinite number of states).

What is continuous time system?

A continuous-time system is a system in which the signals at input and output are continuous-time signals. This chapter connects signals with systems, especially the study of linear time-invariant dynamic systems.

What is difference between discrete and continuous signal?

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.