This course introduces students to the fundamental principles and practices of Human-Computer Interaction (HCI). Students will examine the psychological and design theories that inform user interface design, engage in user-centered design methodologies, and acquire proficiency in prototyping and evaluating interactive systems. Through a combination of theoretical study and practical application, students will learn to critically analyze existing interfaces, conceptualize and implement innovative solutions, and conduct usability evaluations. The course emphasizes the application of HCI concepts to real-world scenarios, preparing students to engineer more intuitive, efficient, and user-centric digital products and services.