Interactive systems refer to computer systems that allow users to interact with them in a dynamic and engaging manner. These systems often involve user input through various input devices such as keyboards, mice, touchscreens, or voice commands. They can range from simple websites and mobile applications to complex virtual reality environments and interactive simulations. The design and development of interactive systems often involve considerations of user experience, usability, and accessibility to ensure that users can effectively and efficiently interact with the system. Research in this area focuses on understanding how users interact with technology, identifying best practices for designing interactive systems, and developing new technologies to enhance user interactions.