A computer has main memory access time of 500 ns or 500 x 10-9 seconds and cache memory access of 100 ns or 100 x 10-9 seconds and the hit ratio of the cache memory is 0.8, find the average access time2Calculate the largest decimal number that can be represented by TU bitsUsing 2’ complement only subtract 52136 from 54126Add

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Random Access

Random access is generally known as direct access. Random access is the capability to have access to any item from a given population of elements at random. Sequential access is the direct opposite of random access. In random access, the elements can be retrieved irrespective of the location. In order to move from point A to Z,  you can just jump to point Z in random access system. The disk is an example of random access.