Definition- Human-computer interface
A human-computer is the use of digital technology to support communications between end users and computers
Examples of how a user can interact with a computer
-Mouse
-Keyboard
-Touch
-Speech
-Sensor
🌟 Definition- Graphical User Interface
A graphical user interface is a user interface which provides windows, icons, menus and pointers so that a user can operate it
GUI’s make computers easier for inexperienced users because
-Easy to learn
-Menus are self explanatory
-The interface is the same across applications
What does WIMP stand for
Windows, Icon, Menus, Pointer
Window definition
A window is an area on a computer desktop which is presented to the end user
Icon definition
An icon is a small picture presented to the user on screen. It normally represents a shortcut to a task/file or an application.
Menu definition
Menus provide a way of grouping similar or related tasks together
Pointer definition
A pointer is an on-screen icon which moves around on screen in response to the users movements of a mouse or other similar input devices.
Advantages of GIUs
-Intuitive and user friendly
-User does not need to understand how the computer operates in order to complete a task
-Normally supported by shortcuts
Disadvantages of GUIs
-Increases processing power
-More powerful graphics card needed
Definition- Natural Language Interfaces
A natural language interface is a means of interacting with digital technology using everyday language
Inputting instructions into a device with a natural language interface can be done by
Text instructions
Spoken instructions
Requires a microphone as an input device
Advantages of natural language interfaces
-suitable for users with limited technical experience
-suitable for users with limited movement
-supports hands-free interaction
Disadvantages of natural language interfaces
-time must be spent to train the device to understand voices
-background noise can interfere
-security issues
Motion tracking definition
Motion tracking interfaces are interfaces which convert movement into digital signals
Inputting motion tracking can be done by
Reflective markers
Sensors
LEDs
Infrared camera
Advantages of motion tracking
-Can help make interaction with digital applications more realistic for the user
-allows inexperienced users to interact with applications in a natural way
Disadvantages of motion tracking interfaces
-because the technology is new its limited
-expensive
Touchscreen definition
A touchscreen is a device which supports interaction through the use of a stylus or fingers
Advantages of touchscreen
Integration of keyboard reduces need for additional hardware and increases portability
Uses intuitive actions such as swiping or tapping the screen to interact with the device
Accessable
Disadvantages of a touchscreen interface
Easily damaged which affects interaction with technology
Screens may be limited in size
Uses a lot of battery leading to constant recharging
Hygiene for touchscreen in public places
Issues that should be considered when designing an interface
Feedback- allowing the user to known if they are using the interface correctly
Intuitive- using obvious icons or symbols so that users can easily guess what action it will carry out
Consistency of design- allows users to transfer their skills from previously used applications
Accessability definition
Accessibility is the ability to personalise digital applications to support use by any user. Feature added to an application to help meet users’ individual needs
