Revision
Hardware considerations
Display types
touch screen
LCD- liquid crystal displays
LED- light emitting diode
OLED- organic light emitting diode
displays that are touch enabled
a type of display that uses a liquid crystal film sealed between glass plates
a small device that emits light when an electric current is passed through it; lots of LEDs are used together to make self-illuminating displays.
a type of display that produces its own light; it is flexible and can include a touch response layer.
Size
the size of the area on the display where, for example, pictures and videos are displayed
User interaction methods
touch and gesture
keyboard and mouse
voice
ADVANTAGES: The HCI will be less cluttered as fewer buttons will be needed. Touch and gestures are also easy to use.
ADVANTAGES: Using a mouse to select the option can be precise which means the chances of the incorrect option being selected is reduced.
DISADVANTAGES: May not be accessible for users who have a physical disability or illness which affects there fingers. It can also increase the chance of the user selecting the incorrect action.
DISADVANTAGES: May not be accessible for users who have a physical disability or illness which affects there fingers. You also have to learn the layout and if you have larger hands it can be difficult.
ADVANTAGE: Activating voice control means all actions can be completed with just speaking. Benefits those who need assistance with technology due to a disability
as there Is little physical interaction needed.
DISADVANTAGES: If the user has a sore throat or cold which has affected there voice then voice commands may not provide the expected result.
Hardware resources
Memory
Processing power
if the HCI has a lot of options then the file size needed to store the HCI will be large, as the HCI is almost a program in its own right.
When a user is communicating with an HCI, processing power will be needed to complete the requested tasks.
components of a flow chart
line- Shows the flow through the process being shown by the flow chart
Decision- shows when a decision has to be made during the process. Two lines must come out of a decision box: Yes/No or True/False
Start/End- indicates the start and end of the process being shown by the flow chart
Step or process- Shows what is done at any specific step, for example: price x quantity - total cost
Input/Output- This can be generated by a user or automated, for example a report or invoice
wireframes
ADVANTAGES:The size of elements can be changes, Changes can be made efficiently and information and graphical elements can be positioned and moved around.
DISADVANTAGES: Interactive features cannot be shown in low fidelity. High fidelity can become over designs.
two disadvantages of a mind map- can be difficult for others to understand and has to be a certain type of mindmap.
Type
there are displays that are touch enabled and not touch enabled