Why Is Computer World Memory Important
In computer world memory is an important constituent. This is because it is essential for collecting data and programs. In fact, a limited application filled small computer is ready to fulfill its given task, with no requirement for additional storage. In general, there is not much space in one memory unit to hold all the programs. Not all the stored information is required by the processor at a given point of time.
So it is beneficial to use less pricey storage devices, which could be used to store information that is not used by the CPU. Memory Unit that interacts directly with the CPU is known as Main Memory.
Devices which are used for backup storages are termed as auxiliary memory. Magnetic disks and tapes are the most common auxiliary
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RAM is utilised for storing bulk data and programs. These data's which are stored in RAM are tend to change. On the other hand ROM used for storing permanent data that would remain forever in computer.
RAM is volatile, it memory gets erased or destroyed once the power is turned off or the power supply is cut off. However, in ROM the data remain same even the power is turned off or on. RAM and ROM chips are available in various range of sizes.
If the memory which is required for the computer is more than the required capacity of one chip, then it becomes essential to gather a number of chips together so that the required memory size is formed.
Memory is an important unit in computers. It is essential for storing data and programs. There are three levels of memory which are I) Main Memory II) Secondary Memory III) Cache Memory. These components are present in an ideal computer.
Main memory is basically fast memory. It stores the program and data which are to be executed. Apart from that, it stores important data of the system. Cache memory is placed in the middle of the CPU and main memory.
Memory Organisation includes
• Memory Hierarchy
• Main memory
• Auxiliary
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