Human-Computer Interaction (HCI) focuses on the design and evaluation of interactive computing systems to improve user-computer interactions. The document discusses HCI's goals, components, and lifecycle, highlighting its evolution from complex early computers to modern user-friendly interfaces and emerging technologies like AI and wearable devices. It also outlines the benefits and challenges associated with HCI, emphasizing the importance of usability and user experience.

1. HUMAN
COMPUTER
INTERACTION

2. CONTENTS
INTRODUCTION
ROLE OF HCI
GOALS OF HCI
USER EXPERIENCE(UX)
USER INTERFACE(UI)
BENEFITS AND CHALLENGES
LIFE CYCLE OF HCI
EVOLUTION OF HCI
FUTURE PATHS OF HCI

3. INTRODUCTION
• Human Computer Interaction (HCI) is the study of interaction
between people(users) and computers.
• Human computer interaction is concerned with the design,
evaluation and implementation of interactive computing systems .

4. Human Computer Interaction has
Three Components
 Human
 Computer
 Interaction
The goal of HCI is to improve the
interaction between users and
computers .

5. MODEL HUMAN PROCESSOR
• Card, Moran and Newell (1983),
described the Model Human Processor
(MHP)
• A simplified view of the human
processing involved in interacting with
computer system.

6. COMPUTER
• In fact, the most sophisticated machines are worthless unless
they can be used properly by human.

7. What is interaction?
Communication
user system
• Interaction involves the exchange of commands and data
between users and computers.
• including input from users to the computer and output from
the computer to users.
• Users can communicate with the system in various ways
such as
• batch input (sending multiple commands at once) or
• direct manipulation (interacting with objects on screen).

8. ROLE OF HCI IN VARIOUS FIELDS

9. GOALS OF HCI
• Goals of HCI are to produce usable and
safe systems, as well as functional
systems.
• to develop or improve safety, utility,
effectiveness, efficiency
• as well as Usability and User Experience

10. USER EXPERIENCE(UX)
• The entire experience of a user with a product or interface.

11. USER INTERFACE (UI)
user interfaces mediate the interaction (dialog) between users
and computer

12. USER INTERFACE (UI)
Good UI design:
• Increases efficiency
• Improves productivity
• Reduces errors
• Reduces training
• Improves acceptance
A balance of two key features is needed for an effective user
interface
• Expressive: ability to achieve specific tasks efficiently
• Intuitive: ease of use, degree of effort required to learn

13. EXAMPLES
• Smartphones
• Voice Assistants
• Wearable Fitness Trackers
• Smart Home Devices
• Car Infotainment Systems
These examples represent widely used technologies with
well-designed interfaces that enhance user experience and
accessibility.

14. BENEFITS
• Ease
• Efficiency
• Satisfaction
• Access
• Inclusivity
• Innovation

15. CHALLENGES
• Complexity
• Adaptation
• Integration
• Consistency
• Accessibility
• Maintenance

16. Human Computer Interaction(HCI) Life
Cycle

17. EVOLUTION OF HCI
• Early Days: Computers were hard to use in the beginning (1940s-1950s).
• GUI Revolution: Graphics made computers easier with things like the mouse
and icons (1970s-1980s).
• User Focus: They started focusing on what users needed (1980s).
• Everywhere Computers: Computers got smaller and were everywhere (1990s).
• Social and Sharing: People started using computers to connect and share
(2000s)
• New Tech: Now, they're exploring cool new stuff like VR and AI (2010s onwards).

18. FUTURE PATHS
• Wearable Devices
• Internet of Things (IoT) Devices
• Brain-Computer Interfaces (BCIs)
• Enhanced User Experience
• Ethical Considerations