What does ROM contain?

Answer 1

ROM stands for Read Only Memory.

The ROM is non-volatile memory;it retains stored information even if the power is turned off (unlike RAM).This is basically used for storing programs and data that need not be altered one stored.

Processor uses ROM to store and execute programs instructions.However it is a type of prime memory and not a storage memory,therefore don't compare it with Hard Disks or CDs and DVDS etc

As the name itself suggests,the information can only be read not deleted,altered or even overwritten.This means that once a bit pattern is stored ,it is permanent or at least semi-permanent (if supports alteration).

The permanent groupincludes two types ,viz. ,ROM and PROM (Programmable ROM).

The semi-permanent also includes two types ,namely,EPROM (Erasable PROM)and EE-PROM (Electrically Erasable PROM). ROM contains the programming that allows your computer to be "booted up" or regenerated each time you turn it on. Unlike a computer's random access memory (RAM ), the data in ROM is not lost when the computer power is turned off. The ROM is sustained by a small long-life battery in your computer.

If you ever do the hardware setup procedure with your computer, you effectively will be writing to ROM.

Answer 2

Different ROM-type memories contain these essential start-up data, i.e.:

• The BIOS is a programme for controlling the system's main input-output interfaces, hence the name BIOS ROM which is sometimes given to the read-only memory chip of the mother board which hosts it.

• The bootstrap loader: a programme for loading (random access) memory into the operating system and launching it. This generally seeks the operating system on the floppy drive then on the hard disk, which allows the operating system to be launched from a system floppy disk in the event of malfunction of the system installed on the hard disk.

• The CMOS Setup is the screen displayed when the computer starts up and which is used to amend the system parameters (often wrongly referred to as BIOS).

• The Power-On Self Test (POST), a programme that runs automatically when the system is booted, thus allowing the system to be tested (this is why the system "counts" the RAM at start-up).

Answer 3

ROM consist of bit lines and address input. ROM stands for Read-Only Memory which is found on various devices and computers.

Answer 4

ROM=read only memory .that is wht we cant do any changes on rom for ex;cd ,dvd,bios(basic input output service )

Answer 5

It composed of Microprocessors

Answer 6

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