FAT is a FileAllocationTable (acronym: FAT), which is a file system invented by Microsoft and partially patented by MS-DOS, and is also used by all non-NT-core Microsoft windows. FAT file system was supported by almost all personal computer operating systems because the computer performance was limited and not complicated at that time. This feature makes it an ideal file system for floppy disks and memory cards, and is also suitable for data exchange in different operating systems. Now generally speaking, fat refers to FAT32. But FAT has a serious disadvantage: when a file is deleted and new data is written, FAT will not organize the file into complete fragments and then write them. After long-term use, the file data will gradually become scattered and the reading and writing speed will slow down. Defragmentation is a solution, but it must be reorganized frequently to keep the efficiency of the FAT file system.
FLAC Chinese can be interpreted as lossless audio compression coding. FLAC is a famous set of free audio compression coding, which is characterized by lossless compression. Different from other lossy compression codes such as MP3 and AAC, it will not destroy any original audio information, so it can restore the sound quality of music CD. Since 20 12, it has been supported by many software and hardware audio products (such as CD, etc. ).