Transcript Lecture 1
IS6116 26/9/11 1 Lecture 1 Ciara Heavin Room 3.85 ORB [email protected] 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? http://www.aldi.co.uk/ 5 6 DESIGN CRITERIA Keep it simple Users come for content Transmission speed is important Everything on the screen should load in 30 seconds 7 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 and visible name and logo should be clear 8 DESIGN CRITERIA Care needs to be taken around bells and whistles Animation Use needs to have a theme or story colour carefully Ensure that visitors can return easily to your site 9 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. 2. 3. 4. Promote natural intuitive learning Make controls, their functions and their results clearly visible Take advantage of the natural constraints and affordances of web objects Be flexible and allow users to undo mistakes 10 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 11 WEBSITE DESIGN DON’T MAKE ME THINK (KRUG, 2005) 12 HOW WE USE THE WEB 1. 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 13 WEBSITE DESIGN 14 15 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 16 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’ 17 NAVIGATION The navigation interface is a set of tools which allows the customer to take advantage of the environment without getting lost 18 19 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 20 WRITING GOOD CONTENT FOR THE WEB Break up content into shorter segments Make text scannable Task oriented writing Consistency Clearing up ambiguities 21 INTERESTING LINKS http://www.youtube.com/watch?v=RlQEoJaLQRA &feature=related http://www.ted.com/talks/don_norman_on_design _and_emotion.html