Name 3 processing systems?
- Batch
- Interactive
- Real time
What does HCI stand for and what 6 things need to be considered?
Human-Computer Interface
- Use of colour
- Layout
- Quantity of information
- Font
- Complexity of language
- Type of controls
What is an operating system?
Software that allows the hardware to communicate with the system.
Responsible for allocating resources: memory, processing and periheral devices
Give the 8 type of operating systems?
- Single-user - for 1 person at 1 time
- Multi-user - more than 1 user sharing
- Single-tasking - 1 task at 1 time
- Multi-tasking - more that 1 task at 1 time
- Batch
- Interactive
- Real-time
- Distributed
What are the 4 main methods of dialogue?
- Prompts
- Nature of Input
- Methods of Input
- Feedback
Explain how natural language HCI can be used with a satellite navigation system?
Satnav uses speech output to direct driver to destination
Forms used to input a destination and options, such as scenic route or quickest time
When designing an HCI, what 4 things should be considered?
- Perception
- Attention
- Memory
- Learning
What is a mental model and what does it help do?
An explantation in someone’s thought process to how something works, based on experience, sound and visuals
Helps user operate a computer
Give 3 things a mental model should do?
- Should cover operational functions of the software
- Should enable user to experience results of an action
- The computer should match the anticipated action of the user
Give 2 reasons why a designer should consider the user’s mental model when designing a system model?
- The user should not get lost when using the system
- The user’s confidence level will increase as they use it as they will recognise methods and graphics
What is the MHP and who developed it?
Model Human Processor compares the user of a computer as a computer including memory and processors.
Developed by Card, Moran and Newell
Explain 2 examples of how the MHP can be applied when designing a user interface?
- On screen flashing cursor, to show where the data is to be input 2. An audible stimulus, such as a beep if an error has been made by the user
Draw the Model Human Processor?
Give 2 examples of real-time processing?
- Air traffic control
- Sat Nav
Give 3 examples of single tasking operating systems?
- iPad
- Calculator
- Washing Machine
What is a distributed operating system?
A form of parallel processing, lots of computers networked together to process small parts
Explain methods of dialogue of prompts?
Used in command line interface, or icons in GUI
Explain the method of dialogue for nature of input?
On a form, next response required will depend on users previous input
Explain the dialogue method for methods of input?
If form based, keyboard and mouse required, or touchscreen
Explain the method of dialogue for feedback methods?
Menus leads to sub menus to provide large selection of choices
But, in real time or interactive feedback provides specific and limited choices
Explain perception and give 2 examples?
User perceives input from sights and sounds
- Red graphics mean stop, green means go
- Happy sounds means correct, sad means incorrect
Explain attention and give 2 examples?
Organising an interface to increase the end users attention span
- Too much disorientates user, decreasing attention
- Pop up messages increase attention span
Explain memory and give 2 examples?
Memorising actions needed to operate the interface
- Organised layout increases memory
- Consistency between pages aids recall
Explain learning, giving two examples?
Drawing on similar interfaces to learn
- Consistent layout
- On screen help such as pop up messages
