3.23 understand the difference between analogue and digital signals

3.23 understand the difference between analogue and digital signals

To send a message using a digital signal, the information is converted into a sequence of numbers called a binary code. Digital electrical signals can either have of only two possible values (typically 0v and 5v). These represent the digits 0 and 1 used in the binary number system.

In the analogue method, the information is converted into electrical voltages and current that vary continuously.