Human Computer Interaction HCI CIIT Human Computer Interaction

Human Computer Interaction (HCI) CIIT----- Human Computer Interaction 1

Outline • • What is Human, Computer and Interaction Goals What is Interface User Interaction Design Interaction Styles Interaction Devices References CIIT----- Human Computer Interaction 2

What is Human Computer Interaction “Human-computer interaction 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” CIIT----- Human Computer Interaction 3

Goals The main goal of HCI is Usability which is a measure of the effectiveness, efficiency and satisfaction of the user to achieve specified goals in a particular environment. A usable System is: • Easy to Learn • Easy to Remember how to Use • Effective to Use • Efficient to Use • Safe to Use • Enjoyable To Use CIIT----- Human Computer Interaction 4

Human Senses and Computer • A human and a computer communicates. • A human usually has 5 senses: – Sight, – Hearing, – Touch, – Taste, – Smell, • A computer hasn’t any senses as such, it is machinery, with electrons running around in and out of component devices. CIIT----- Human Computer Interaction 5

Computer match with senses • A good interface match would include as many senses as possible. • Computer input and output is basically seeing what we enter and what is displayed. • Sound can be added to some programs, either by giving instructions by voice, or listening to a commentary / music. • Touch can be in the form of using the mouse, a joystick, or a drawing tablet. CIIT----- Human Computer Interaction 6

What is an Interface? • A point where the human can tell the computer what to do. • A point where the computer displays the requested information. CIIT----- Human Computer Interaction 7

What Tools are Used? • A keyboard, for typing, • A mouse, for pointing , • A scanner, for copying, • A camera, for images. • A monitor, for displaying, • A printer, for printing, • A sound card. For audio, • A DVD, for video. CIIT----- Human Computer Interaction 8

Virtual Reality • Virtual Reality is a computer interface. • Programs combine the interfaces already mentioned to give a simulated three dimensional world of sight, sound, touch and movement. • Interaction may be made through special equipment such as: glasses, gloves, sound systems, and the regular computer devices. • As these types of interfaces develop and become more advanced (realistic) through high level programming, so the human use will become more common and so it will seem to be similar to communication with other humans. CIIT----- Human Computer Interaction 9

Interaction • HCI is concerned with joint performance of Task by Human & Computer • Communication between The User and The System • Physical Interaction OUTPUT SYSTEM USER --Interaction Devices INPUT • Conceptual Interaction – Interaction Styles CIIT----- Human Computer Interaction 10

Interaction Styles • Command Line Interface • Menus • Question & Answer Dialogue • Form-Fill Interface • WIMP (Window, Icon, Menu, Pointing) • Direct Manipulation • Natural Language CIIT----- Human Computer Interaction 11

Interaction Devices Input Devices • Keyboards • Mouse, Trackballs, Touch Pads • Touch Screens • Speech Input • 3 D trackers, 3 D Mouse Output Devices • Screens • Printers • Sound Output CIIT----- Human Computer Interaction 12

References 1. A brief history of Human Computer Interaction Technology, Brad A. Myers 2. Introduction to HCI, Matthias Rauterberg 3. Human Computer Interaction, Keith Andrews 4. Human Computer Interaction, 2 nd Edition, Alan Dix 5. Cognitive Architectures and HCI, Wayne D. Gary, Richard M. Young 6. Usability Design, Jan Gulliksen 7. Future of HCI, Michael H. Coen 8. HCI, Nicky Danino 9. www. ashcombe. surrey. sch. uk/legacy/. . . /Human. Computer. Interface. pp. . . CIIT----- Human Computer Interaction 13