Flashcards
Pareto's Law and Memory Hierarchy
Flashcards do conjunto (12)
- 1Pareto’s LawBasic Law: 80% of the work is done by 20% of an organization.
Revised Law: 90% of the work is done by 10% of an organization.
*Used to improve computer efficiency and speed.* - 2Register (Internal Memory)Internal CPU storage. Very high speed but very limited in number.
- 3Cache (Internal Memory)PM extension to accelerate access.
- 4Primary Memory(PM) (Internal Memory)Short term storage of executing programs and their data.
- 5RAM(PM) (Internal Memory)Working storage for executing programs.
- 6Virtual Memory (External Memory)PM extension to increase capacity.
- 7Secondary Memory (SM) (External Memory)Long term storage of programs & data.
- 8Electric Disk (SM) (External Memory)EPROM used as secondary memory.
- 9Magnetic Disk (SM) (External Memory)Magnetic recording on a rotating disk.
- 10Memory Hierarchy
- 11Memory HierarchyFactors affecting choice:
Capacity - Maximize to increase speed and problem size.
Speed - Maximize to minimize delays.
Cost - Minimize. - 12—