CS814PE:
HUMAN COMPUTER INTERACTION
(Professional Elective - VI)

Course Objectives
• To gain an overview of Human-Computer Interaction
(HCI), with an understanding of user interface design in
general, and alternatives to traditional "keyboard and
mouse" computing.
• become familiar with the vocabulary associated with
sensory and cognitive systems as relevant to task
performance by humans.
• be able to apply models from cognitive psychology to
predicting user performance in various human-
computer interaction tasks and recognize the limits of
human performance as they apply to computer
operation.

Course Objectives
• appreciate the importance of a design and evaluation
methodology that begins with and maintains a focus on the
user.
• be familiar with a variety of both conventional and non-
traditional user interface paradigms, the latter including
virtual and augmented reality, mobile and wearable
computing, and ubiquitous computing
• understand the social implications of technology and their
ethical responsibilities as engineers in the design of
technological systems.
• Finally, working in small groups on a product design from
start to finish will provide you with invaluable team-work
experience.

Course Outcomes:
• Ability to apply HCI and principles to
interaction design.
• Ability to design certain tools for blind or PH
people.

UNIT - I
• Introduction: Importance of user Interface –
definition, importance of good design. Benefits of
good design. A brief history of Screen design.
• The graphical user interface – popularity of
graphics, the concept of direct manipulation,
graphical system, Characteristics, Web user –
Interface popularity, characteristics- Principles of
user interface.

What is HCI?

• HCI stands for Human-Computer Interaction.
• It is an interdisciplinary field
that focuses on the design, evaluation, and
implementation of interactive computing systems for
human use.
• The goal of HCI is to create intuitive and user-friendly
interfaces
• between humans and computers that allow people to
interact with technology in a natural and efficient way.
• This involves understanding human behavior, cognitive
processes, and social interactions, as well as the
capabilities and limitations of computers and other
digital devices.

• HCI is a critical component
in the design and development of software
applications, websites, mobile devices, and other
interactive technologies.
• It involves a range of methods and techniques
for studying user behavior, such as usability testing,
user surveys, and user-centered design.
• The ultimate aim of HCI is to improve the user
experience and make technology more accessible
and effective for all users.

What is User Interface?

• A User Interface (UI) is the point of interaction
between a user and a digital device
such as a
 Computer
 mobile phone
 or other electronic device.
It includes:
all the visual, audio, and tactile elements that users
can see, hear, and touch when they interact with a
device.
as well as the overall layout and organization of
information on the screen.

List some of the
Components of User
Interface ?

User Interface has two components
• Input
• Output
Input is how a per communicates his/her needs or
desires to the computer.
Common input components are
Keyboard, mouse, trackball, voice
Output is how the computer conveys the results of
its computations and requirements to the user.

next class
Why user Interface is important?
General considerations for designing
user interface.
what is meant by good user interface?
Benefits of good design.

Why user Interface is important?

• User interface is important to meet user
expectations (accessability, visual aesthetic and
ease of use) and support the effective
functionality of user site.
• A well executed user interface facilitates effective
interaction between the user and the program.
• An optimal mix of effective visuals and efficient
responsiveness will improve site’s conversion
rates.
• It anticipates the needs of the user and then
satisfies those needs.

General considerations for designing
user interface

3 general considerations for designing of user
interface:
• Whether the system uses custom built screens
or browser based.
• What devices will it be used on.
• Which operating systems will it support.

what is meant by good user interface?
• Clear
• Consistent
• Simple
• User-controlled
• Direct and
• Forgiving

Benefits of good design
• Training costs are lowered.
• Employee / user satisfaction will improve.
• Builds customer relationships.
• Bounce rates will lower.

Graphical User Interface