...... is a discipline
concerned with the design, evaluation, and
implementation of interactive computing systems for human use and with the study of major phenomena surrounding them.

Setting the time on a stove is an example of a product that have been designed primarly with the user in mind

they may work effectively, it can be at the expense of how easily they will be learned

they have been engineered mainly as software systems to perform set of functions

They are generally easy and enjoyable to use

smartphone is an example of products that have not necessarily been designed with users in mind

to develop interactive products we need to be able to understand how to
reduce the positive aspects of the user experience,
and enhancing the negative ones

speech-based systems is an example of

commands is an example of

handheld is an example of

send messages is an example of

forms is an example of

wearables devices is an example of

icons is an example of

gather information is an example of

menus is an example of

A key question for interaction design is:
“How do you optimize the users’ interactions with a system,
environment, or product so that they support the users’ activities in effective, useful, usable and pleasurable ways?”

interaction design is defined as:
Designing interactive products to support the way people
communicate and interact in their everyday and working lives