A scheduler is a system or tool that organizes and manages tasks or events over time. It helps individuals or organizations plan their activities, ensuring that resources are allocated efficiently and deadlines are met. Schedulers can be found in various forms, such as digital applications, calendars, or even physical planners. In computing, a scheduler refers to software that determines the order in which processes or tasks are executed by the CPU. This is crucial for optimizing performance and ensuring that multiple tasks can run smoothly without conflicts. Examples of scheduling algorithms include Round Robin and First-Come, First-Served.