IS6116 26/9/11

1IS6116 26/9/11Lecture 1

Ciara Heavin

Room 3.85 ORB

c.heavin@ucc.ie

021 4903826

Practical Sessions Lab 1.113 Wednesday 1-2pm Friday 1-2pm Commencing week starting Oct 3rd

CAN YOU ANSWER THIS? Four jolly men sat down to play; And played all night till break of day; They played for money and not for fun, With separate scores for every one. Yet when they came to square accounts, They all had made quite fair amounts!

Can you the paradox explain? If no one lost, how could all gain?

CAN YOU ANSWER THIS?

What is the name of the famous city?

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http://www.aldi.co.uk/

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DESIGN CRITERIA Keep it simple

Users come for content

Transmission speed is important

Everything on the screen should load in 30 seconds

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DESIGN CRITERIA Site performance is critical

Site should be available 24/7

Organisation needs to know what kind of traffic it can handle

Company’s name and logo should be clear and visible

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DESIGN CRITERIA Care needs to be taken around bells

and whistles

Animation needs to have a theme or story

Use colour carefully

Ensure that visitors can return easily to your site

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DESIGNING FOR USABILITY “Only if a site is extremely easy to

use will anybody bother staying around” (Nielsen and Norman, 2000)

Guideline for customer friendly design: 1. Promote natural intuitive learning2. Make controls, their functions and their

results clearly visible3. Take advantage of the natural constraints

and affordances of web objects4. Be flexible and allow users to undo

mistakes

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BUILDING AN E-COMMERCE WEBSITE Requires an understanding of business,

technology and social issues. The main challenges in building an e-

commerce website lie in: Developing a clear understanding of your

business objectives Choosing the technology to achieve these

objectives

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WEBSITE DESIGNDON’T MAKE ME THINK (KRUG, 2005)

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HOW WE USE THE WEB1. We do not read pages we scan them

2. We do not make optimal choices - We satisfice

3. We do not figure out how things work - We muddle through

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WEBSITE DESIGN

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DESIGNING FOR SPEED Customers view ecommerce as a time saving

device

To increase site performance the web designer can: Optimise back-end applications Optimise the site content

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ACCESSIBILITY Ecommerce webs are places of business and

must be accessible to all customers

Designers must account for a variety of abilities

Flexible design does not mean that every customer must have access to the same experience every customer has access to a complete and well

designed experienced

Customer friendly design relies on ‘graceful degradation’

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NAVIGATION The navigation interface is a set of tools

which allows the customer to take advantage of the environment without getting lost

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NAVIGATION SHOULD: Be easy to learn

Be consistent Provide feedback

Use the minimum number of clicks

Use clear and intuitive labels

Support user tasks

Have each link be distinct from other links

Group navigation into logical units

Avoid making the user scroll to get to important navigation or submit buttons

Not disable the browser's back button

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WRITING GOOD CONTENT FOR THE WEB Break up content into shorter segments Make text scannable Task oriented writing Consistency Clearing up ambiguities

INTERESTING LINKS http://

www.youtube.com/watch?v=RlQEoJaLQRA&feature=related

http://www.ted.com/talks/don_norman_on_design_and_emotion.html