NOR Flash memory has traditionally been used to store relatively small amounts of executable code for embedded computing devices such as PDAs and cell phones. NOR is well suited to use for code storage because of its reliability, fast read operations, and random access capabilities. Because code can be directly executed in place, NOR is ideal for storing firmware, boot code, operating systems and other data that change infrequently. NAND Flash memory has become the preferred format for storing larger amounts of data on devices such as USB Flash drives, digital cameras and MP3 players. Higher density, lower cost, faster write and erase times, and a longer re-write life expectancy make NAND especially well suited for consumer media applications in which large files of sequential data need to be loaded into memory quickly and replaced with new files repeatedly.