A good answer might be:

Radio Similar GUI Parts
Control knobs, dial, and levers Graphical Components
Variable resistors and capacitors, switches Listener methods
Receiver electronics and audio amplifier Application methods

Real-world Interfaces

Non-software devices usually have user interfaces, too. They have:

  1. Components that make up the user interface.
    • Knobs, buttons, switches, dials, levers
  2. Parts that are connected to the interface components.
    • These "translate" the user action into something the rest of the device can act on.
  3. The part of the device that does the actual work.


(Thought question: ) What is the one graphical component that (nearly) all GUI programs must have? Click here for a: