7256602
Description
Mind Map by Gladys Mba, updated more than 1 year ago
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Created by Gladys Mba
over 7 years ago
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2d Human-Computer interfaces
- Command Line Interfaces
- Advantages
- O - Requires very little memory
- O - Less processing time
- O - Can be used for simple to complex instructions
- O - No restrictions to commands in pre-determined lists
- O - takes little time if user is a pro
- O - Requires very little memory
- Disadvantages
- X - No margin for spelling errors
- X - User needs to memorise commands
- X - Time consuming to enter lots of data
- X - No margin for spelling errors
- Used for complex tasks such as configuring embedded
systems and things not usually needing an interface
- Uses prompts to aid user know what to type and
feedback after successful actions
- User types commands
- Advantages
- Menus/Submenus
- Advantages
- O - Users presented with commands rather than memorising
- O - Text based, doesn't need as much memory as GUI
- O - Menu can be provided in context to what the user is doing
- O - Users presented with commands rather than memorising
- Disadvantages
- X - Users restricted be pre-defined list of commands
- X - May have to navigate many sub-menus to get command you want
- X - Some menu options don't correspond to an obvious action.
- X - Users restricted be pre-defined list of commands
- Provide simple list of choices for user to select to either
perform an action or open another menu
- Usually text based
- Can have numbered or lettered options
- Lettered options may have more meaning
but can lead to over lapping
- Lettered options may have more meaning
but can lead to over lapping
- Can use arrow key or pointing device to
highlight and select options
- Needs meaningful and structured system
- Advantages
- Graphical User Interface
- Advantages
- O - Simple to understand due to various
prompts such as pictures, icons and menus
- O - More intuitive and can be tailored to
users' mental models
- O - Good for visual learners.
- O - Simple to understand due to various
prompts such as pictures, icons and menus
- Disadvantages
- X- Uses a lot of memory
- X - Requires a lot of processing
- X- Uses a lot of memory
- Contains some elements of WIMP but not necessarily all
- Very common
- Advantages
- Natural Language
- Advantages
- O - No learnt commands
- O - Voice can be quicker than typing
- O- Can be used with no hands available.
- O - No learnt commands
- Disadvantages
- X - More processing needed to pick key words from
complex sentences
- X - Need good voice recognition to process different voices
- X - Difficult to give complex computer based commands
- X - More processing needed to pick key words from
complex sentences
- Uses everyday language rather than specific
computer based commands
- Computer responds in everyday, conversational language.
- e.g. voice command interfaces, siri
- Advantages
- Form dialogue
- Advantages
- O - Clear prompts means less likely to make mistakes
- O - Controls used to aid selection
- O - Can be validated
- O - New options given of removed based on
previous responses
- O - Can give default options
- O - Clear prompts means less likely to make mistakes
- Disadvantages
- X - Restrictions to options on screen
- X - A lot of data entry may be frustrating
- X - May accidentally leave given default
options unchanged
- X - Restrictions to options on screen
- The computer output separate prompts and
response fields for a number of inputs
- e.g. dialogue boxes
- Advantages
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