This presentation is all about the internal and external memory storage in computer system.. It provide a overall of the different memories in computer..

1. ASSIGNMENT
OF
COMPUTER APPLICATION FOR
BUSINESS
Submitted to: Miss Parveen
Submitted by: Poonam
06/MBA/23

2. Topic
Internal and external
memory storage in
computer

3. Introduction
■ A memory is just like a human brain computer.
■ It is used to store data and instructions.
■ A computer memory is a storage space in
computer where data is processed and
instructions required for processing.
■ Memory is divided into large number of small
parts called cell.

4. Memory can be
divided into three
parts
■ Cache memory
■ Primary memory/Main Memory
■ Secondary memory

5. Cache memory
■ Cache memory is Very high speed
semiconductor memory which can speed up
CPU.
■ It acts as a buffer between CPU & main
memory.
■ It is used to hold that data and program which
are most frequently used by CPU.

6. Advantages of cache
memory
■ Faster than main memory
■ Consume less access time
■ Temporary use
■ Executed within short period of
time

7. Main Memory
■ Primary memory holds the memory when
working in the computer.
■ There are two types of memory
■ RAM(Random access memory)
■ ROM(Read only memory )

8. Features of main memory
■ These are semiconductor memory
■ Faster than secondary memory
■ Data is lost when the power supply is off.
■ A computer cannot run without main
memory
■ It is working memory of computer.

9. Random Access Memory
■ A random access memory is the best
known memory of computer.
■ RAM is considered as a volatile memory.
■ RAM is made up of small chips.
■ RAM has two options
■ Reading operation. •Writing operation

10. Type of RAM
SRAM
■ Requires less time
■ Access time is low
■ Do not refresh
■ More power
consumption
DRAM
■ Requires more time
■ Access time is high
■ Need to be refresh
■ Less power
consumption

11. ROM
■ ROM is used to hold a program that executes
automatically by the computer every time
when it is turned on or reset.
■ It is non-volatile memory.
■ ROM chips contains permanent information.
■ Rom is where the basic instructions the
computer needed to be stored.

12. Types of ROM
■ PROM(Programmable Read Only
Memory)
■ EPROM(Erasable Programmable Read
Only Memory)
■ EEPROM( Electrically Erasable
Programmable Read Only Memory)

13. Secondary memory
■ Used in computer system to overcome the
limitations of primary memory.
■ Has an operating speed far slower than main
memory.
■ Used to store large amount of data on
permanent basis.
■ It is known as a auxiliary memory.

14. Features of secondary
memory
■ These are magnetic & optical memories.
■ It is known as a backup memory .
■ It is Non- volatile memory.
■ Slower than main memory.
■ Computer can run without main memory.

15. Types of secondary memory
■ Magnetic disk
1. Floppy disk
2. Hard disk
■ Optical disk
1. CD- ROM
2. CD-R
3. DVD

16. Conclusion
■ In conclusion,we can say that memory is a
storage space in the computer in which we can
store data and information.Mainly memory is
divided into two parts: Primary memory &
Secondary memory. Primary memory is the
main memory of the computer and a computer
cannot run without primary memory while
computer can run without secondary memory.

17. Thank you