Describe the principles established the foundation for graphical interfaces.

Principles established the foundation for graphical interfaces :

1. Illusion of Manipulable Objects:
   • Objects you can click or interact with should be clear and make sense.
   • Icons and handles (like window borders) help users understand what they can manipulate.
2. Visual Order and Viewer Focus:
   • Important things on the screen should grab attention when needed.
   • Contrast, animation, and even sound can be used to draw attention.
   • Feedback, like changing the cursor shape, helps users know what’s happening.
3. Revealed Structure:
   • Users should see immediate results when they perform actions.
   • Minimize the gap between what users want to do and the actual result.
   • Make the relationship between actions and outcomes clear.
4. Consistency:
   • Keep things consistent for easier learning.
   • Elements, grammar, fonts, and styles should remain the same across the interface.
5. Appropriate Effect or Emotional Impact:
   • Match the interface’s look and feel to the product and its audience.
   • Is it a serious business system or a fun computer game? The interface should reflect that.
6. Match with the Medium:
   • Consider the device’s capabilities.
   • The interface should work well with the screen resolution and color capabilities of the device.