Human-Computer Interaction (HCI) is the study of how people interact with computer

Human-Computer Interaction (HCI) is the study of how people interact with computer systems and how to improve the design of those systems to enhance user experience. HCI combines principles of psychology, design, and computer science to create interfaces that are intuitive, efficient, and effective. The goal of HCI is to create computer systems that are easy to use and understand, and that enable users to complete tasks in a timely and efficient manner. HCI research focuses on user needs, user behavior, and system design, and employs a range of methods such as usability testing, user surveys, and cognitive walkthroughs to evaluate and improve system interfaces.