An automatic mutual exclusion computer programming system is disclosed which allows a programmer to produce concurrent programming code that is synchronized by default without the need to write any synchronization code. The present wear-leveling technique advantageously improves the overall useful life of a flash memory device by strategically moving inactive data to the memory blocks that have experienced the most wear since the device began operation and by strategically moving active data to the memory blocks that have experienced the least wear. The second frame is attached to the first frame by elastomeric mountings. A method and a memory containing computer readable instructions permitting the microprocessor to control the MPEG-2 decoder are also described. Thus, the user can readily view where and when their sensitive information has been entered.