13.1 Storing Elements in the File System

	A computer system stores data in a format that can be retrieved later in its original form.
	The basic unit of storage in a file system is the bit.
	A number of grouped bits (usually 8 bits) makes a byte. A field which is a group of bytes is used to represent characters and numbers.
	Related fields form a record. A group of records of the same type form a file.