Cache Memories - computer architecture:

• Speed of the primary memory is very low in comparison with the speed of processor
• For well performance, the processor can't spend much time of its time waiting to access instructions and data in primary memory.
• An efficient solution is to use fast cache memory
• When a cache is occupied and a memory word that is not in the cache is referenced, the
• Significant to device a scheme that reduces the time to access the information cache control hardware ought to decide which block should be eliminated to create space for the new block that contain the referenced word.