Assume that you are planning to build a website similar to Amazon (www.amazon.com) website which is primarily used for ordering books for the US from any location in the world through Internet. Say, a user would like to buy four items in one transaction using the concept of shopping cart. Explain how you would incorporate the following principles while designing the user interface of your system. You can invent details as required.
Aesthtics:in terms of colour used, used matching colors and dont use colours that are hard on the eyes. Use clear fonts,nothing too small.Align buttons and text consistently (but don't over-crowd) to improve visibility and overall aesthetics.Make sure animations don't detract from the main site, take too long to download.
Consistency: is very important in a user interface.Keep placement, formatting, wording and actions uniform: for example, the Close button is always red and at top-right.
You have to set user interface design standards, cause the user already has a basic idea of how to use the site.
Forgiveness: warn users when something irreversible is about to happen. one way of doing that is to ask the user if they are sure they want to delete a file, displaying a low battery warning or a creating a restore point.
Appropriate user feedback:a good way to give feedback would be to advise the user of what is currently happening (eg. a status bar or pop-up window stating that a download is 10% complete.
Use of metaphors:Borrow “themes” from existing familiar systems. For example: Title Menu or Next Chapter on a DVD is similar to a book's terminology.
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