This document discusses different types of computer memory structures. It introduces registers and cache memory as the fastest types of volatile memory closest to the CPU. Registers are very small memory locations inside the CPU used to store instructions and data during processing. Cache memory is faster than main memory and stores frequently used data and instructions from main memory. Volatile memory loses its data when power is removed, while non-volatile memory retains data permanently in storage devices like hard drives, USB drives, and optical discs.

1. DEV BHOOMI GROUP OF
INSTITUTIONS
SAHARANPUR
Name : Saurabh Chauhan
Class : M.C.A. 2nd (2013-15)
Roll no : 1358614017
Topic : Storage Structure . 1
Sub To : Miss Supriya Sharma
Sub By : Saurabh Chauhan

2. STORAGE STUTURE
WELCOME :

3. OUTLINE :
 Introduction :
 Types of memory :
 Register and Cache memory :
 Register :
 Register V/S Cache memory :
 Volatile memory :
 Non volatile memory :
 Thank you :
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4. INTRODUCTION :
 In computing memory refers to the physical
devices used to store programs (sequences of
instructions ) or data (e.g. program state
information ) on a temporary or permanent
basic for use in a computer or the digital
electronic device.
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5. Register
Cache
Main memory
Electronic disk
Optical disk
Magnetic disk
HDD(Hard Disk Drive)
Larger
capacity
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6. REGISTER :
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 The register is a small set of data holding places
that are part of a computer processor .
 A register may hold a computer instruction , a
storage address, or any kind of data (such as a bit
sequence or individual characters).

7. CACHE MEMORY :
 CPU cache, a small area of fast memory used by
the central processing unit.
 Faster and expensive than RAM
 Processor can use it to store frequently access
data and programs instructions
 There are two types of cache memory :
 L1 primary cache (inside microprocessor)
 L2 secondary cache (in the mother board) or near
the microprocessor .
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8. REGISTER V/S CACHE MEMORY :
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REGISTER
-> Computer register are
commonly 1,2,4 or 8 bytes
long with each byte being 8
bit. Modern machines use
registers mostly 4 or 8 bytes
long.
-> Register are used to
quickly accept , store and
transfer data and
instructions that are being
used immediately by the
CPU.
-> Register memory are
smaller in size than cache
memory
And registers are faster than
cache.
CACHE
-> A small amount (less than
1 MB) of high speed
memory residing on or
close to the CPU.
Cache memory supplies the
processor with the most
frequently requested data.
-> Cache memory store the
frequently used data from
main memory.
-> Cache memory is random
access memory(RAM) .
This does not have to do the
more time – consuming
reading of data from larger
memory .

9. VOLOTILE MEMORY :
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 Data will be erase when the power is turned off.
 E.g. –RAM(main memory), Register ,Cache.
 CUP directly interact.
 It’s a temporary memory.
 Main memory is divided into two parts :
 Random access memory (RAM),should
be better known as read write memory
(RWM).
o Read only memory (ROM).
o Rom is a static memory.

10. NON VOLOTILE MEMEORY :
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 It keep data permanently.
 For example -: HDD ,ZIP drive , DVD, CD, or a
USB (flash) drive. pen drive ,memory card.
 It supplements the main memory .
 its permanent memory .
 Program ,data entered into the system ,
intermediate results and final results produced are
stored in the secondary memory
 Can store large amount of data.
 A secondary storage device is another memory
device for a computer that will hold and store more
information.

11. THANK YOU…