HCI is the study of how people design, implement and evaluate interactive computer systems in the context of user's tasks and work.

• A. True
• B. False
• C. Only hardware
• D. Only software

Answer: (A)

HCI focuses on how people interact with computer systems within the tasks they perform, spanning the entire lifecycle from design through implementation to evaluation. It isn’t limited to hardware or to software alone; both play integral roles in the interactive experience, as do the context and work tasks in which the system is used. Interfaces involve hardware like keyboards, mice, touchscreens, and sensors, and software like applications and operating systems, all evaluated to ensure usability and effectiveness in real tasks. Because of this broad scope—designing interfaces, implementing usable solutions, and evaluating them with real users in their work context—the statement is true.