What is the memory hierarchy of a computer?
The memory in a computer can be divided into five hierarchies based on the speed as well as use. The processor can move from one level to another based on its requirements. The five hierarchies in the memory are registers, cache, main memory, magnetic discs, and magnetic tapes.
Which of the following is lowest in memory hierarchy?
Memory Hierarchy: Auxiliary Memory. Auxiliary memory is known as the lowest-cost, highest-capacity and slowest-access storage in a computer system.
What is caching in computer?
In computing, a cache is a high-speed data storage layer which stores a subset of data, typically transient in nature, so that future requests for that data are served up faster than is possible by accessing the data’s primary storage location.
How is memory hierarchy used in computer architecture?
Memory Hierarchy in Computer Architecture. The memory hierarchy design in a computer system mainly includes different storage devices. Most of the computers were inbuilt with extra storage to run more powerfully beyond the main memory capacity. The following memory hierarchy diagram is a hierarchical pyramid for computer memory.
What are the two categories of memory in a computer?
In general, the storage of memory can be classified into two categories such as volatile as well as non- volatile. The memory hierarchy design in a computer system mainly includes different storage devices. Most of the computers were inbuilt with extra storage to run more powerfully beyond the main memory capacity.
How are the first three memory hierarchies different?
The first three hierarchies are volatile memories which mean when there is no power, and then automatically they lose their stored data. Whereas the last two hierarchies are not volatile which means they store the data permanently. A memory element is the set of storage devices which stores the binary data in the type of bits.
What are secondary storage devices in memory hierarchy?
At level-3, secondary storage devices like Magnetic Disk are present. They are used as back up storage. They are cheaper than main memory and therefore much larger in size (in few TB). At level-4, tertiary storage devices like magnetic tape are present.