FIFO是英文First In First Out 的缩写，是一种先进先出的数据缓存器，他与普通存储器的区别是没有外部读写地址线，这样使用起来非常简单-FIFO is an abbreviation of the English First In First Out, is a first-in, first-out data buffer, the difference between him and ordinary memory is external read and write address lines, very simple to use