Electronic Systems and Subsystems

• Systems involve an INPUT, PROCESS and OUTPUT.
• Digital the signal can only have two possible values 0V or +V and switches instantly between the two.
• Analogue the signal can have any value between 0V and +V and there is a gradual change from one output voltage to the next.
• A MOSFET is a transducer unit
• An NPN is a transistor unit.