I added one more - Expose state of the system to user. Examples include:
- Vintage radios with sliding marker that shows what the current station freq is
- 3 state sliders that show whether something is state A/B/C by simply looking at it. When performing action on such a slider, user immediately knows by the means of performing the action, what the state of the system is!
- Volume knobs, shows the current state.
- Big bright ON light when a Keithley power supply is supplying power
- Lots of Braun products, too many to list.
May be these are obvious but it just reminds me that things we take granted are really important in UX/UI.
- Vintage radios with sliding marker that shows what the current station freq is - 3 state sliders that show whether something is state A/B/C by simply looking at it. When performing action on such a slider, user immediately knows by the means of performing the action, what the state of the system is! - Volume knobs, shows the current state. - Big bright ON light when a Keithley power supply is supplying power - Lots of Braun products, too many to list.
May be these are obvious but it just reminds me that things we take granted are really important in UX/UI.