Human use of computers is a major focus of the field of HCI
1.WHAT IS HUMAN COMPUTER INTERFACE?
ANS Human-Computer Interaction is the study of how people interact with computers and to what extent computers are or are not developed for successful interaction with human beings.
2. WHAT ARE THE GOALS OF HCI?
ANS. Goals of HCI are given below:
- Create usable software-enabled products and user-interfaces.
- Enhance the usability of existing products.
- Identify problems and tasks that can be addressed with software products.
3.WHAT ARE THE DESIGN PRINCIPLE OF HCI?
ANS. The HCI design modules should contains the following points:
- be user-centered and involve users as much as possible so that they can influence the design.
- integrate knowledge and expertise from the different disciplines that contribute to HCI design,
- be highly iterative so that testing can be done to check that the design does indeed meet users’ requirements.
4. WHAT ARE THE 8 GOLDEN PRINCIPLES OF SHNEIDERMAN’S ?
ANS. Following are the 8 golden rules of SHNEIDERMAN’S:
1. Strive for consistency.
2. Enable frequent users to use shortcuts.
3. Offer informative feedback.
4. Design dialogs to yield closure.
5. Offer error prevention and simple error handling.
6. Permit easy reversal of actions.
7. Support internal locus of control.
8. Reduce short-term memory load.
5. WHAT ARE NORMAN’S SEVEN PRINCIPLE OF TRANSFORMING DIFFICULT TASK INTO EASY ONE?
ANS. Following are NORMAN’S seven task :
- Use both knowledge in the world and knowledge in the head.
- Simplify the structure of tasks.
- Make things visible.
- Get the mappings right.
- Exploit the power of constraints, both natural and artificial.
- Design for error.
- When all else fails, standardize. Design Principles of HCI.
6. EXPLAIN THE TERM GULF OF EXECUTION AND GULF OF EVALUATION?
- Gulf of execution: the distance between the users goals and the means of achieving them
through the system.
- Gulf of evaluation: The distance between the system’s behaviour and the user’s goals.
7. WHAT ARE THE SEVERAL ASPECTS OF LOOP OF INTERACTION IN HCI?
ANS.The loop of interaction has several aspects to it including:
- Task environment: The conditions and goals set upon the user.
- Machine environment: The environment that the computer is connected to.
- Areas of the interface: Non-overlapping areas involve processes of the human and computer not pertaining to their interaction. Meanwhile, the overlapping areas only concern themselves with the processes pertaining to their interaction.
- Input flow: The flow of information that begins in the task environment, when the user has some task that requires using their computer.
- Output: The flow of information that originates in the machine environment.
- Feedback: Loops through the interface that evaluate, moderate, and confirm processes as they pass from the human through the interface to the computer and back.
8. HOW HCI IS DIFFERENT WITH THE RELATED FIELDS?
- HCI differs from human factors in that with HCI the focus is more on users working specifically with computers.
- HCI also differs from human factors in that there is less of a focus on repetitive work-oriented tasks and procedures, and much less emphasis on physical stress and the physical form or industrial design of the user interface, such as keyboards etc.
- The principles of human interaction management extend the scope of CSCW to an organizational level and can be implemented without use of computer systems.
9.WHAT ARE THE FACTORS OF CHANGE IN HCI?
ANS. Following are the factors of change in hci:
- Decreasing hardware costs leading to larger memory and faster systems
- Miniaturization of hardware leading to portability
- Reduction in power requirements leading to portability
- New display technologies leading to the packaging of computational devices in new forms
- Specialized hardware leading to new functions
- Increased development of network communication and distributed computing
- Increasingly widespread use of computers,
- Increasing innovation in input techniques combined with lowering cost.
- Wider social concerns leading to improved access to computers by currently disadvantaged groups.
10.WHAT IS THE FUTURE OF HCI?
ANS. Following ids the future of HCI:
- Ubiquitous communication
- High-functionality systems.
- Mass availability of computer graphics.
- Mixed media.
- High-bandwidth interaction.
- Information utilities.