HCI Introduction Lecture 1 PDF

lecture 1 Principle of : Human Computer Interaction HCI Dr. Nermeen Kashief 1  Course’s Martials Textbooks: Dix, A., Finlay, J., Abowd, G.D., & Beale, R. (2004). Human computer interaction (3rd ed.). You can find all of the...

lecture 1 Principle of : Human Computer Interaction HCI Dr. Nermeen Kashief 1  Course’s Martials Textbooks: Dix, A., Finlay, J., Abowd, G.D., & Beale, R. (2004). Human computer interaction (3rd ed.). You can find all of the resources related to this book online from the book’s website at http://www.hcibook.com/e3/plain/about/book/. Marks distribution of HCI Course Report 1 5 Midterm 10 Report 2 5 Practical 20 Semester 60 final total 100 2  Outlines 1. Introduction 2. What is Human-Computer Interaction? A. Human B. Computer C. Interaction - Usability 3. UI/UX designer 4. Difference Between UI and UX 5. Difference between HCI and UI/UX 3  1- Introduction Interacting with technology has become an essential part of everyday life for the majority of people. People are busy and may spend little or no time actually learning a new system. Therefore, computer systems should be easy to use, easy to learn, and with no errors. To design and develop of such a system is a major concern of HCI 4  2- What is HCI ? How to enable interaction between human and computer by making computers more usable. 8  A. Human (users) The user who interact with computer The golden principle in HCI is that “people should come first”. Problem Users have different abilities? 9  Users have different abilities: Culture environments Cognitive abilities Experience Physically Age, hand size, height, strength, Disabilities 10 Why do we need to understand Humans in HCI? Humans are limited in their capacity to process information This has important implication for design Interacting with technology is cognitive  B. Computer Computers are not just computers anymore (Embedded machines) – mobile phone – Camera – Car – Washing machine, dish washer – Alarm clock – ATM – Copy machine 12  B. Computer a computer system is made up of various elements each of these elements affects the interaction – input devices – text entry and pointing – output devices – screen (small&large), digital paper – virtual reality – special interaction and display devices – physical interaction – e.g. sound, haptic, bio-sensing – paper – as output (print) and input (scan) – memory – RAM & permanent media, capacity & access – processing – speed of processing, networks 13  C. Interaction Dialogue between human and computer The goal of interaction “improving the usability of system that include computers.” The idea that the interaction between a computer and the user should resemble a human-to-human, open-ended dialogue. 14  Example of interaction: Chatbots Today chatbots have become one of the most promising and useful tools a company can use to communicate with its customers in natural language. – Customer services – Don’t pay – Google assistance – Woebot (medical) – ATM 15  Why is usability Important? 16  Why is Usability Important? Products that are easy to use a good for business. Improving usability can – increase productivity of users, – reduce costs (support, efficiency), – increase sales/revenue (web shop), – enhance customer loyalty, or – win new customers. Usability is often considered as sign of quality Usability gives a competitive advantage. Why is Human-Computer Interaction Important? Albrecht Schmidt 17 18 A usable system is: 1. easy to use 2. easy to learn 3. easy to remember how to use 4. efficient and effective to use 5. safe to use 6. enjoyable to use 20  4- Dimensions of Usability? A usable system is: 1. Easy to use Errors: How many errors do users make, how severe are these errors, and how easily can they recover from the errors? 21 Dimensions of Usability? A usable system is: 2. Easy to learn Learnability: How easy is it for users to accomplish basic tasks the first time they encounter the design? 3. Easy to remember how to use Memorability: When users return to the design after a period of not using it, how easily can they reestablish proficiency? 22  Dimensions of Usability? 4- Likeability=Enjoyable to use People may like a product for any other reason… 23  Dimensions of Usability? 5. Effective to use=Utility a product can be used to reach a certain goal or to perform a certain task. This is essential! Efficient to use – Efficient produce result without wasting time or many or martial 24  Dimensions of Usability? 6. Safe to use 25 UI/UX and HCI? 26  What is UX? A User Experience (UX) designer: UX designers focus on creating products that are easy to use and understand. UX designers always put users’ needs first when considering design solutions in order to enhance customer satisfaction. The fundamentals of UX design include: Defining a problem Understanding users Generating task and user flows Creating sketches and prototypes Usability testing 28  What is UI? User Interface design (UI): UI designers make products joyful to interact with: – Color scheme – Typefaces – Iconography – Layout 29 Difference between UX and UI 30 31  The difference between HCI and UX design HCI is more academic-based and focuses more on research. UX design is more industry-based and focuses more on practice. While HCI focuses more on understanding the interaction between human and computers through research, UX design focuses more on dictating the rules about how to design a great user experience. 32  Exercise Find the good and bad design according to usability 33  Information overload Parking Sign 34 35 36 37 Examples..(cont.) 38 Examples..(cont.) 39 Examples..(cont.) 40  These keys are useful? One of the main goals of user experience design is to make your product easy to use. Achieving that is not easy as it might seem. 41