This document discusses human-computer interaction (HCI). HCI involves users interacting with computers through a user interface. It differs from a user interface by focusing on the two-way interaction between humans and technology. HCI is important because computers are now more affordable and used widely by non-technical people with varying needs, skills and backgrounds, requiring technology to be intuitive and user-friendly.

1. HUMAN
COMPUTER
INTERACTION

2. WHAT IS HCI ?
Human:
Individual user, a group of users working together, a sequence of users in an
organization
Computer:
Desktop computer, large-scale computer system, pocket PC, embedded system
(e.G., Photocopier, microwave oven), software (e.G., Search engine, word
processor)
User interface:
Parts of the computer that the user contacts with
Interaction:
Usually involve a dialog with feedback & control throughout
Performing a task (e.G., User invokes “print” command and
Then interface replies with a dialog box)

3. The Differences Between UI & HCI . .
User Interface
(UI)
Human
Computer
Interaction (HCI)
• like how you
designed the
computer to react
with user its involved
in the interaction link
between user and
• is the interaction
between user and
computer let say it’s
like how you use the
computer and how it
response of your

4. WHY HCI IS IMPORTANT ??
In the past, computers were expensive & used by
Technical people only
Now, computers are cheap and used by non-technical
People (different backgrounds, needs, knowledge, skills)
⇒ Computer and software manufacturers have noticed the
importance of making computers “user-friendly”:
Easy to use, save people time, etc.

5. EXAMPLE :
Do you know how to use them ?