FIFO

FIFO stands for "First In, First Out." It is a method used to manage items, such as inventory or data. The principle dictates that the first items added to a system are the first ones to be used or sold. For example, in a grocery store, older perishable products are sold before newer ones to reduce waste. This approach helps ensure freshness and efficiency in operations, making it widely used in businesses, especially in food and retail industries, and can also apply to computer memory management and data processing.