Parity checking is often used in computer memory to detect errors. However the expense (time, money and space) may not be worth the cost when less efficient and less costly software validation will do.

1. Investigate some current memory types utilized in systems today
2. What parity and error-correcting (ECC) memory options are available?
3. Discuss how is parity checking implemented in the memory module?
4. How are errors detected and what happens when and error is detected?
5. Discuss what types of computer systems should use parity and ECC memory and why?