Event {Ans: An action or occurrence that happens during runtime that will trigger a response or behavior by the software.}Event-driven programming {Ans: Type of computer programming where the program responds to an input (or trigger).}Emulator {Ans: A simulator that imitates a program or events.}End users {Ans: A representative consumer for whom a hardware or software product is designed.}User Interface (UI) {Ans: The visual part of a computer app or operating system, through which an end user interacts with the computing device or software.}Flowchart {Ans: A diagram that represents an algorithm, work flow, or process, and uses geometric symbols connected by arrows to show the direction of the flow of action.}