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2d Human-Computer interfaces
Descrição
A level, A2 IT (Chapter 2) Mapa Mental sobre 2d Human-Computer interfaces, criado por Gladys Mba em 14-12-2016.
Sem etiquetas
a-level
a2
ict
ocr
chapter 2
it
chapter 2
a level, a2
Mapa Mental por
Gladys Mba
, atualizado more than 1 year ago
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Criado por
Gladys Mba
aproximadamente 8 anos atrás
25
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Resumo de Recurso
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
Disadvantages
X - No margin for spelling errors
X - User needs to memorise commands
X - Time consuming to enter lots of data
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
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
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.
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
Can use arrow key or pointing device to highlight and select options
Needs meaningful and structured system
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.
Disadvantages
X- Uses a lot of memory
X - Requires a lot of processing
Contains some elements of WIMP but not necessarily all
Very common
Natural Language
Advantages
O - No learnt commands
O - Voice can be quicker than typing
O- Can be used with no hands available.
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
Uses everyday language rather than specific computer based commands
Computer responds in everyday, conversational language.
e.g. voice command interfaces, siri
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
Disadvantages
X - Restrictions to options on screen
X - A lot of data entry may be frustrating
X - May accidentally leave given default options unchanged
The computer output separate prompts and response fields for a number of inputs
e.g. dialogue boxes
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