Introduction to Human-Computer Technology
- 1. INTRODUCTION TO HUMAN COMPUTER INTERACTION Prepared by: Sanie G. Bautista
- 2. WHAT IS HCI?
- 3. HCI Human-Computer Interaction (HCI) is a multidisciplinary field of study focusing on the design of computer technology and, in particular, the reaction between humans (the users) and computers.
- 4. • ACM: discipline concerned with the design, evaluation and implementation of interactive computing systems for human use and with the study of major phenomena surrounding them (1992) • Dix: “HCI is study of people, computer technology and the ways these influence each other. We study HCI to determine how we can make this computer technology more usable by people” (1998) • Carroll: “HCI is the study and practice of usability. It is about understanding and creating software and other technology that people will want to use, will be able to use, and will find effective when used.” (2002)
- 5. Main Components of 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)
- 6. 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. How to achieve “user-friendliness” in computer design?
- 8. Principles of HCI 1. Know the User - the interaction and interface should cater to the needs and capabilities of the target user of the system in design 2. Understand the Task - task refers to the job to be accomplished by the user through the use of the interactive system 3. Reduce Memory Load - humans are certainly more efficient in carrying out tasks that require less memory burden, long or short term.
- 9. Principles of HCI 4. Strive for Consistency - consistency and familiarity lead to higher acceptability and preference 5. Remind Users -provide continues reminder about important information or action to be performed 6. Prevent Errors - the interaction and interface should be designed to avoid confusion and mental overload 7. Naturalness - Naturalness refers to a trait that is reflective of various operations in our everyday life
- 10. HCI GOALS
- 11. HCI Goals Develop & Improve • Safety • Utility • Effectiveness • Efficiency • Usability • Appeal
- 12. HCI Goals • Safety - protecting the user from dangerous conditions and undesirable situations. Example: Warning for exit before save.
- 13. • Utility - extent of providing the right kind of functionality so that users can do what they need or want to do. Example: A lot of word processing functions is provided.
- 14. • Effectiveness - concern a user’s ability to accomplish a desired goal or to carry out work Example Find a master thesis in our library Web.
- 15. • Efficiency - a measure of how quickly users can accomplish their goals or finish their work using the system Example: • Find a book “Human-Computer Interaction” in our library web • How about a master thesis? • How about a newest book in the subject of “Human- Computer Interaction”
- 16. • Usability - ease of learning and ease of use Example: • Can I use the basic functions of a new digital camera without reading the manual • Icons help ease of learning
- 17. • Appeal - how well the user likes the system - First impression - Long-term satisfaction Example: Interface is attractive
- 18. HCI Goals • Microsoft Word as an example
- 19. Microsoft Word
- 20. ACTIVITY #1 1. Open your cellphone and browse 5 applications you frequently use. 2. Evaluate each application if they meet the given HCI Goals. Use the given table below.
- 21. ACTIVITY #1 1. Open your computer and browse 5 applications/software you frequently use. 2. Evaluate each application/software if they meet the given HCI Goals. Use the given table below.
- 22. THANK YOU!