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Digital Literacy Revision (6 Factors Affecting UI Choice (Ease of use (An…
Digital Literacy Revision
User Interfaces
Basic
Menu
A menu interface is a way of is a way of selecting options by clicking on a graphic on the device's screen. These are things like ATM's where you choose whether to deposit or withdraw money.
Form
A form interface works by the user entering information through various form controls. It takes up smaller parts of the screen and only allows specific information.
Text
Text interfaces work by inputting commands with the keyboard. Once done the interface will respond accordingly. It's simple and accessible for everyone and doesn't use any graphics.
Complex
Sensor
This interface collects data from different types of sensors and then outputs it as data to the device. This is for things like retina scanners or finger print scanners.
Speech
Speech interfaces are activated through the user's speech. These are found in things such as Siri or Alexa.
Graphical
This interface allows you to react with different devices through icons. This is a visual interface therefore made up of graphics.
Hardware
Display size
Different pieces of hardware will have different sizes for their screen than others. For example, computers are have a longer width and can only be viewed one way. While phones are longer horizontally but can be flipped on it's side. This is why you should be considerate of the design for other devices.
Input method
Different pieces of hardware have different ways of inputting their information. Computers have a keyboard and mouse while phones use a touchscreen. This should be kept in mind when designing an interface.
Accessibility
Hearing
Users with hearing needs will have limited hearing and can't hear everything. To avoid problems, write in clear English and have subtitles on videos.
Motor
Users with motor needs may not be able to move their body at all. It will take a long time to enter things onto the keyboard or move a mouse. Objects should be large so they can be selected easily,
Speech
Users with speech need may not be able to communicate effectively and may be unable to pronounce or say words clearly. This be helped by allowing alternative ways of entering information than speech, and allowing the user several tries at a command.
Cognitive
Users with cognitive needs may need more time for completing tasks. They may be unable to types or say many words correctly. You should provide a spell check, have an option for the text to be read out loud, and make sure that the layout of each page is consistent.
Visual
Users with visual needs may have limited vision or be colour blind. For this, you should use colours that don't clash. Ensure the text is large enough to read, or allow pieces of texts to be read out loud.
6 Factors Affecting UI Choice
Ease of use
An interface may be able to help you complete certain tasks, but it's very important that it's easy to use. If people can't use it, they will go and use a different interface.
User experience
Different users will have a large range of experience with many devices. Therefore it’s important to see what sort of features it has so certain people will be able to use it.
User requirements
The primary for any user interface is to allow it’s user to complete a certain task on a device. You may not find an interface meeting all of your requirements, so you have to find one with a lot of the essential ones on it.
Accessibility
Some users may have different accessibility needs such as visual, hearing and speech needs. You’ll have to consider whether it is accessible or there can be customization options to cater to their needs.
Performance
The performance of an interface is very important as you need to consider how quickly you will complete a task.
Storage space
The amount of storage space you have will determine the type of interface used and what it’s features will be. There has to be a careful balance of the storage space and ease of use.
User Skills
Regular
Occasional
Expert
Novice
Design Principles