User Interfaces – Core Revision Points

Purpose of a User Interface

• Bridges human-computer communication, enabling users to issue commands and receive feedback.

Types of User Interfaces

• Graphical User Interface (GUI)

• Menu-Based Interface

• Command Line Interface (CLI)

• Natural Language / Voice Interface

Features of a Graphical User Interface (GUI)

• Utilizes WIMP elements: Windows, Icons, Menus, Pointer.

• Visual, intuitive, and supports direct manipulation.

Features of a Command Line Interface (CLI)

• Text-based, requiring users to type commands.

• Demands precise syntax and knowledge of specific commands.

GUI vs CLI (Key Differences)

• GUI: Employs a pointer for visual selection of icons/menus; requires minimal memorization.

• CLI: Commands are typed; powerful and scriptable but less intuitive.