Stands for “First In, First-Out,” FIFO method is just a way of running information where the information first obtained may be the first to be sent out after processed.This method also used in accounting system.

FCFS is also the jargon term for the FIFO operating system scheduling algorithm, which gives every process central processing unit (CPU) time in the order in which it is demanded.FIFO’s opposite is LIFO, last-in-first-out, where the youngest entry or ‘top of the stack’ is processed first

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The computer mouse as we know it today was invented and developed by Douglas Engelbart, with the assistance of Bill English, during the 1960’s and was patented on November 17, 1970