its contains cpu and storage devices

2. NATIONAL UNIVERSITY
OF
MODERN LANGUAGES

3. GROUP MEMBERS
1. Manal Sarfraz
2. Rizwan Pervaiz
3. Nida Dilawar
4. Adeela
5. Iqra Aslam
6. Shahwaiz Iqbal

4. CENTERAL PROCESSING UNIT
AND
STORAGE DEVICES

5. CENTERAL PROESSINGUNIT
The central processing unit (CPU) is the portion of a computer system that
carries out the instructions of a computer program, to perform the basic
arithmetical, logical, and input and output operations of the system. It
acts as the BRAIN of computer.

6. HISTORY
 The first CPU was made in the 1940s and was
run with the first computer the
EDVAC(Electronic DiscreteVariable Automatic
Computer)
 The EDVAC was one of the first functional
electronic computer.

8. FUNCTIONS OF CPU
It handles all the instructions
Control all the operations
Control all the instruction &
calculation
It dose fetch , Decode, Execute
and store the data

10. Processors
Adevicethatprocessessomething.
Single Core Dual Core Quad Core

11. SingleCore
Single core CPUs are the oldest type of
computer CPU
It can only start one operation at a time, so they
were not very good at multi-task.
Although only one operation could be started at
a time, another one could be activated before the
first one was finished but with each new
operation the computer would run more slowly.

12. DualCore
A dual core CPU is a single CPU that has two cores
and thus functions like two CPUs in one.
It can handle multitasking much more efficiently
Dual core CPUs are faster than single core

13. QuadCore
Quad Core CPUs are a further refinement of the multi-
core CPU design and features four cores on a singleCPU.
These types of CPUs are useful for people that need
to run a lot of different programs at the same time as well
as gamers.
Just as dual core CPUs could split the workload between
two cores, quad cores allows for even greater
multitasking.

14. PARTS OF CPU
Microprocessor
Motherboard
Video card
LAN card
Random access memory (RAM)
Compact Disk Read Only
Memory (CD ROM)

15. WHAT IS MOTHERBOARD?
1.A motherboard is one of the most essential
parts of a computer system.
2. The base of a motherboard consists of a very
firm sheet of non-conductive material, typically
some sort of rigid plastic.
3. A bus is a communication path on the
motherboard that links major components
together.

16. WHAT ID MICROPROCESSOR?
1.It holds info about
the operating system
of the computer.
2.Its speed is
measured in
megahertz
3.The microprocessor
is a
multipurpose, progra
mmable device
4. that accepts digital
data as input,
processes it according
to instructions stored
in its memory, and
provides results as
output

17. WHAT IS RAM?
Random Access Memoryis also known as the
computer’s system memory. It needs power to be read; hence,
when a computer turns off, the memory is lost

18. WHAT IS VIDEO CARD?
A LAN Cardor Network Interface Card is also an
expansion card. Also known as the modem, it helps
the computer to connect to another computer on a
Network.

19. Video card
 is an expansion card that is connected to the
motherboard. It serves as the visual link
between the user and its computer, allowing the
user to view and manage the computer’s
software data.

20. Storage devices
A piece of computer equipment on which
information can be stored.
OR
Storage Devices are the data storage devices that
are used in the computers to store the data.

21. STORAGE DEVICES

22. TYPES OF MEMORY
 Primary Memory
 Secondary Memory

23. FUNCTION OF MEMORY
 Primary Memory
 Generally smaller in size,
designed to hold data temporarily
 internal to the computer.
fastest data access speed,
include RAM and cache memory.

24. TYPEOF PRIMARYDEVICE
 RAM (Random Access Memory)
 ROM (Read only Memory)

25. TYPES OFMEMORY
 Secondary Memory
large storage capacity
store data permanently
internal and external
include the hard disk, compact disk drive and
USB

26. Hard disk
 Hard disk is a device used to store and retrieve
information using one or more rigid rapidly
rotated disk with magnetic material.

27. There are two types of Hard Disk Drive:
1. SSD (Solid State Drive)
2. HDD (Hard Disk Drive)
Hard Disk Drive Types

28. Pros and crons of SSD
 Pros:
 High efficiency
 Silent
 Powerful
 Life time
Crons:
 Data loss on failiuer
 Costly
 Capacity

29. Pros And Crons Of HDD
Pros:
 Further dependent on RPM “5400 72000 and
1000”
 Data recovery
 Capacity
 Cheap
Crons:
 Power comsumption
 Heat produced
 Life time
 Noise

30. Floppy disk
 Floppy disk is a flexible removable magnetic
disk, typically encased in plastic cover. Used for
storing data.

31. Universal serial bus(USB)
 USB is one of the best invention in storage
devices. It is portable. we store data in lot off
amount.

32. Thank you 