4.4 Memory

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.

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

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.

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.

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

time needed to access the data.