1. As there were no program instructions, no program storage was necessary. 2. Problem ( user ) programs could not modify data or program storage associated with the system state. 3. Privileged accounts started with the letter " A " and had some additional command and program storage capabilities. 4. All current models use flash memory for program storage , and newer models allow the PIC to reprogram itself. 5. The AVR was one of the first microcontroller families to use on-chip flash memory for program storage . 6. If high resolution graphics were not required then 5?KB of the upper memory could be used for program storage . 7. The Micom machine countered the problem of obsolescence by avoiding the limitations of a hard-wired system of program storage . 8. It used dekatrons for volatile memory, similar to RAM in a modern computer, and paper tape for input and program storage . 9. Aside from the enormous memory requirements such a facility would take, no motor program storage area in the brain has yet been identified. 10. Harvard architecture computers have ( at least ) two very different banks of memory, one for program storage and other for data storage.