GCSE ICT Unit 3 Double Award Revision Notes Edexcel

Unit 3 revision notes for the Edexcel Double Award.

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GCSE ICT Unit 3 Exploring Digital Design REVISION NOTES
User Centred Design
Digital Product designers and developers don't just make a Digital Product and hope for the best. The
range of MP3 players were not randomly designed in the hope that the likes of Joshs, Jeans, Jaynes or Johns
of this world would like, buy and use them!
Putting the intended users of a Digital Product at the centre of the design and development is called User
Centered Design. This is an iterative process where you would typically need to carry out the following
activities in a cycle:
· Requirements gathering - Understanding and specifying the context of use
· Requirements specification - Specifying the user and/or organisational requirements
· Design and build - Producing designs and prototypes
· Evaluation - Carrying out user-based assessment of the Digital Product
Some of the most popular user-centered design methods for gathering the information needed to inform
the design and development include:
Focus groups ­ Requirements gathering
A focus group involves encouraging an invited group of intended/actual users of a Digital Product to share
their thoughts, feelings, attitudes and ideas on a certain subject.
Questionnaires - Requirements gathering & evaluation
Questionnaires are a means of asking users for their responses to a pre-defined set of questions and are a
good way of generating statistical data. This method is used mainly when a large group is needed and it is
not realistic through direct contact, so for this reason questionnaires are usually administered through
postal or electronic means.
Interviews - Requirements gathering & evaluation
An interview usually involves one interviewer speaking to one participant at a time. The advantages of an
interview are that a participant's unique point of view can be explored in detail. It is also the case that any
misunderstandings between the interviewer and the participant are likely to be quickly identified and
addressed. Interviews are usually used early in the design process in order to gain a more detailed
understanding of specific requirements
Usability testing - Design & evaluation
Usability testing sessions evaluate a Digital Product by collecting data from people as they use it. A person
is invited to attend a session in which they'll be asked to perform a series of tasks while a moderator takes
note of any difficulties they encounter.
Usability testing can be used as an input to design or later in the project during the build and
implementation phases. It is an excellent way finding out what the most likely usability problems with a
Digital Product are likely to be.
Summary
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GCSE ICT Unit 3 Exploring Digital Design REVISION NOTES
These are some of the more commonly used User Centered Design methods. It is important to remember
that although each method can be extremely valuable, using them in the right way, for the right reasons and
at the right time is critical. Exactly which method to use, and when and how to use it, will differ from project
to project.…read more

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GCSE ICT Unit 3 Exploring Digital Design REVISION NOTES
User experience honeycomb
Usable - ease of use remains vital, usability is
necessary but not everything. True, you have to be
able to use something to do something with it. In
short, usability is necessary but not sufficient
Desirable ­ don't underestimate the power and
value of image, identity, brand, and other elements
of emotions that desirable design can
bring...…read more

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GCSE ICT Unit 3 Exploring Digital Design REVISION NOTES
by deciding who it will be sent to, you then compose the email and finally, you send the email.
Sending is confirmed by an on-screen message and the email appearing in your 'Sent Items' folder.
5. Offer simple error handling - As much as possible, design the system so the user cannot make a
serious error.…read more

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GCSE ICT Unit 3 Exploring Digital Design REVISION NOTES
· People who can't see very well (the colours and the contrast between colours; the size of text;
the choice of fonts)
· People who are blind (a screen reader that interprets the elements on a page, alt tags for
images, and title tags for links, the inclusion of audio description for video content)
· People who can't hear very well (subtitles, signing on video content)
· People who find traditional input devices (mouse, keyboard) hard…read more

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GCSE ICT Unit 3 Exploring Digital Design REVISION NOTES
6 | Page…read more

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GCSE ICT Unit 3 Exploring Digital Design REVISION NOTES
Principles of Digital Product/software development
Digital Products and software are `engineered'. They do not simply come about for no reason, nor are they
created by magic. Good Digital Products and software are developed through a development process.
The process will typically be - take a brief , go through it and write/produce a proposal and move through
stages including analysis, design, building, testing and implementation.…read more

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GCSE ICT Unit 3 Exploring Digital Design REVISION NOTES
The Iterative Design and Development approach
Design
The design phase defines how the finished Digital Product will operate. Designers will typically produce a
`design specification', a kind of blueprint, detailing the best structure for the product, the best methods for
data input, data output and user interaction via one or more user interfaces.
The design specification is based upon the requirements collected during the preceding analysis phase.…read more

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GCSE ICT Unit 3 Exploring Digital Design REVISION NOTES
As designs are refined and the next version of the product made available, it is important to track what will
be tested, what is highlighted as working, what is highlighted as not working, what previously worked but
now doesn't work as a result of the latest changes etc.…read more

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GCSE ICT Unit 3 Exploring Digital Design REVISION NOTES
Briefs generally fall into two categories ­ a brief to create a new product or a brief to update, refresh or
correct an existing product. A client may invite proposals from a number of product developers and will
then pick the best proposal depending on some criteria.…read more

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