Digital Electronics

• Analogue uses a whole range of continuous variations to transmit a signal that include variations of high and low states.
• Digital signals use only 2 states, on and off.
• Logic gates are processors that are circuits containing transistors and other components.
• Their function is shown by the truth table. Inputs are combined and turned into an output in a logical way. For example, a NOT gate turns a 1 into 0 and a 0 into a 1.