What Is First Come First Serve Algorithm: A Simple Scheduling Technique

The First Come First Serve (FCFS) algorithm in C programming is a scheduling technique employed by the CPU to manage and prioritize tasks. This algorithm operates as a non-preemptive scheduling method, meaning that once a task begins, it continues until it completes its execution. The essence of FCFS is to assign priority to tasks in the order in which they are received by the processor. In other words, the task that arrives first is executed first, followed by subsequent tasks in the order of their arrival. This method ensures that jobs are processed in a chronological sequence, with no interruptions. As of March 29, 2022, this algorithm has been widely used in various computing systems to manage task scheduling effectively.

FCFS, which stands for “First Come First Serve,” is a scheduling algorithm used in computer science and operating systems. In the FCFS scheduling algorithm, tasks or jobs are processed in the order they arrive in the ready queue. This means that the job that arrives first is allocated to the CPU, followed by the second job, and so on, based on their arrival time. For example, on February 25th, 2023, this algorithm would prioritize tasks in the same order they entered the queue, ensuring that the earliest arrivals are processed first.

Is FIFO the same as FCFS (First-Come-First-Serve)? The term “FCFS” is often used interchangeably with FIFO when discussing operating system scheduling algorithms. Both FIFO and FCFS refer to a scheduling method that allocates CPU time to processes based on their arrival order. In this approach, the process that arrives first is the one to receive CPU time first, and subsequent processes are served in the order they enter the queue. Therefore, when you hear “FCFS,” it’s essentially referring to the same scheduling algorithm as FIFO, emphasizing the principle of serving processes in the order they arrive.