Summary of Memory Technology
DRAM is slow but cheap and dense:
- Good choice for presenting the user with a BIG memory system
- Uses one transistor, must be refreshed.
SRAM is fast but expensive and not very dense:
- Good choice for providing the user FAST access time.
- Uses six transistors, holds state as long as power is supplied.
GOAL:
- Present the user with large amounts of memory using the cheapest technology.
- Provide access at the speed offered by the fastest technology.