Before revision: Control knobs are a simpler type of input hardware and one of the most common components in control systems, and are found on all sorts of devices from taps and gas stoves to optical microscopes, potentiometers and radio URL Operation A control knob works by turning a shaft which connects to the component which produces the actual input.
After revision: Control knobs are a simpler type of input hardware and one of the most common components in control systems, and are found on all sorts of devices from taps and gas stoves to optical microscopes, potentiometers , radio tuners and digital cameras, as well as in aircraft URL Operation A control knob works by turning a shaft which connects to the component which produces the actual input.