Differentiate between RAM and ROM?

Answer Posted / manoj

ROM - Read-only memory: On ROM, data is prerecorded for read
only which can not be removed. ROM is nonvolatile and it
retains its contents regardless the computer is on or off.
Most personal computers contain a small amount of ROM that
stores critical programs such as the program that boots the
computer. In addition, ROMs are used in calculators and
peripheral devices such as laser printers,whose fonts are
often stored in ROMs. There are a few variations of ROM such
as programmable read-onlymemory(PROM), which is manufactured
as blank chips on which data can be written with a special
device called a PROM programmer.

RAM - Random access memory: whose contents can be accessed
(read, write and remove) in any order. This is in contrast
to sequential memory devices such as magnetic tapes, discs
and drums, in which the mechanical movement of the storage
medium forces the computer to access data in a fixed order.
RAM is usually used for primary storage in computers to hold
active information such as data and programs. Common forms
of RAM are: SRAM (Static RAM) and DRAM (Dynamic RAM).

Is This Answer Correct ?    54 Yes 19 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

Does a clean install erase everything?

510


Differentiate between the user mode and monitor mode.

598


Tell me what is executive in windows nt?

560


Tell me if you know how are the wait/signal operations for monitor different from those for semaphores?

519


Explain any program using Semaphores.

579






What is scsi?

690


What are interrupts?

674


What is the use of chkdsk f?

502


What is rdram?

561


What is drawback of mvt?

571


What is the purpose of the command interpreter? Why is it usually separate from the kernel?

765


Is 4gb ram enough for netflix?

605


What is normal operating system?

526


Explain the reasons for process suspension?

570


Can I upgrade my cpu from 32 to 64 bit?

487