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4.4 Memory

RAM It is a volatile memory which means the data stored in the RAM evaporates the moment you cut the power supply. That’s one of the reasons we can’t use random

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Слайд 14.4 Memory

4.4 Memory

Слайд 2RAM
It is a volatile memory which means the data

stored in the RAM evaporates the moment you cut the

power supply. That’s one of the reasons we can’t use random access memory as permanent storage despite the fact that it’s way faster than the traditional magnetic disk-based hard drives.

All of the modern operating systems we use have built-in workarounds to handle RAM’s volatile nature. All the work done is constantly saved on the hard drive to avoid situations where unexpected system shutdown would result in data loss.
RAM It is a volatile memory which means the data stored in the RAM evaporates the moment

Слайд 3ROM
The ROM is a non-volatile memory; it doesn’t forget the

data even if the power supply is removed. ROM is

used to store firmware for the hardware which hardly gets any update, for instance, the BIOS
ROMThe ROM is a non-volatile memory; it doesn’t forget the data even if the power supply is

Слайд 4Differences

Differences

Слайд 5Virtual memory
Virtual memory is an abstraction of the main

memory. It extends the available memory of the computer by

storing the inactive parts of the content RAM on a disk. It fetches it back to the RAM when the content is required.
Virtual memory Virtual memory is an abstraction of the main memory. It extends the available memory of

Слайд 6Cache memory
Cache memory is used to store frequently accessed data

in order to quickly access the data whenever it is

required. They both are conceptually the same; however they mainly differ in the matter of implementation.
Cache memoryCache memory is used to store frequently accessed data in order to quickly access the data

Слайд 7Purposes
VM- It extends the memory capacity of a computer beyond

the one that is installed.
CM- It reduces the amount of

time needed to access the data.
PurposesVM- It extends the memory capacity of a computer beyond the one that is installed.CM- It reduces

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