computerhardwarecomponent-ppt-121104135329-phpapp02.ppt

computerhardwarecomponent

1. Computer Hardware Computer Hardware
ComponentsComponents

2. Computer Hardware Computer Hardware
componentscomponents
Motherboard
CPU
Keyboard
Mouse
RAM
Monitor
Floppy drive
CD-ROM drive
Hard disk drive
DVD Drives

5. Central Processing UnitCentral Processing Unit
The microprocessor consists of
three sections:
1.Arithmetic Logic Unit
2.Registers
3.Control Unit

6. MOTHERBOARDMOTHERBOARD
Main circuit board inside your Main circuit board inside your
computer is called a computer is called a
motherboard. motherboard.
The motherboard contains the The motherboard contains the
connectors for attaching connectors for attaching
additional boards, such as the additional boards, such as the
CPU, BIOS, memory, mass CPU, BIOS, memory, mass
storage interfaces, serial and storage interfaces, serial and
parallel ports, expansion slots parallel ports, expansion slots
and all the controllers that are and all the controllers that are
required to control standard required to control standard
peripheral devices such as the peripheral devices such as the
display screen, keyboard, and display screen, keyboard, and
hard drive. hard drive.

7. MOTHERBOARDMOTHERBOARD
Here we see a diagram Here we see a diagram
and a photo of a and a photo of a
motherboard (or main motherboard (or main
circuit board). circuit board).
This one is suitable for a This one is suitable for a
Pentium CPU Pentium CPU

8. PCI SLOTSPCI SLOTS
PCI slotsPCI slots This This
board has 4 slots board has 4 slots
for the newer PCI for the newer PCI
boards for boards for
peripherals like peripherals like
video cards, video cards,
sound cards, sound cards,
internal modems, internal modems,
etcetc

9. MEMORY SLOTMEMORY SLOT
Memory slotsMemory slots
There are 4 short There are 4 short
slots for SIMM slots for SIMM
memory. memory.
This board has This board has
two long slots for two long slots for
a new kind of a new kind of
memory called memory called
DIMM DRAM. DIMM DRAM.

10. MOTHERBOARDMOTHERBOARD
Keyboard plugKeyboard plug :This is where the keyboard attaches, thru the back of the :This is where the keyboard attaches, thru the back of the
computer.computer.
Power ConnectionsPower Connections This is where the power supply connects to the This is where the power supply connects to the
motherboardmotherboard
Processor socketProcessor socket What is visible here is the place where the processor What is visible here is the place where the processor
plugs into the motherboard. When the processor is installed, you still can't plugs into the motherboard. When the processor is installed, you still can't
see it because on top of it is a heat sink and fan to keep the processor cool. see it because on top of it is a heat sink and fan to keep the processor cool.
Hot processors make mistakes or even melt important parts on the chip.Hot processors make mistakes or even melt important parts on the chip.
Different processors are different sizes. So the socket on the motherboard Different processors are different sizes. So the socket on the motherboard
has to match the processor. Also, the circuits in the motherboard itself must has to match the processor. Also, the circuits in the motherboard itself must
be different for different processors. be different for different processors.

11. RAMRAM
RAM, or Random-Access-RAM, or Random-Access-
Memory, is a type of memory that Memory, is a type of memory that
accesses faster than main memory accesses faster than main memory
(like a hard drive), but that only (like a hard drive), but that only
stores data while the computer is stores data while the computer is
turned on. It is normally used to turned on. It is normally used to
store the program that your store the program that your
computer is currently running, computer is currently running,
and any data that program needs.and any data that program needs.
RAM is divided into small blocks RAM is divided into small blocks
of data, each of which can be of data, each of which can be
accessed by a unique number, accessed by a unique number,
called an address.called an address.

12. MonitorMonitor
The computer The computer
screen is used screen is used
for outputting for outputting
information in information in
an an
understandable understandable
format.format.

13. Floppy driveFloppy drive
Storage Devices -- "How it saves data andStorage Devices -- "How it saves data and
programs“programs“
- - Hard disk drives are an internal,- - Hard disk drives are an internal,
higher capacity drive which also stores thehigher capacity drive which also stores the
operating system which runs when you operating system which runs when you
powerpower
on the computer.- on the computer.-
"Floppy" disk drives allow you to save"Floppy" disk drives allow you to save
work on small disks and take the data withwork on small disks and take the data with
you.you.

14. FEATURES:- FLOPPY DISKFEATURES:- FLOPPY DISK
Diskettes (Floppy Disks)Diskettes (Floppy Disks)
Speed:Speed:
Very slow!Very slow!
Capacity:Capacity:
Normally 1.44 MbytesNormally 1.44 Mbytes..
Cost:Cost:
Very cheapVery cheap..

15. EXTRA FEATURESEXTRA FEATURES

16. Hard DisksHard Disks
Hard DisksHard Disks
Speed:Speed:
Very fast!Very fast!
The speed of a hard disk is often quoted The speed of a hard disk is often quoted
as "averageas "average
access time" speed, measured in access time" speed, measured in
milliseconds. Themilliseconds. The
smaller this number the faster the disk.smaller this number the faster the disk.
 Capacity:Capacity:
Enormous! Often 40/80 Gigabytes. A Enormous! Often 40/80 Gigabytes. A
Gigabyte isGigabyte is
equivalent to 1024 Megabytes.equivalent to 1024 Megabytes.
 Cost:Cost:
Hard disks costs are falling rapidly and Hard disks costs are falling rapidly and
normallynormally
represent the cheapest way of storing represent the cheapest way of storing
datadata..

17. CD-ROM driveCD-ROM drive
They are disc drives which read They are disc drives which read
Compact Discs (CDs). They are Compact Discs (CDs). They are
transportable and can be used transportable and can be used
to perform various tasks such to perform various tasks such
as reading data from the as reading data from the
computer and listening to audio. computer and listening to audio.
Data is written on a CD by Data is written on a CD by
burning pits into the disc to burning pits into the disc to
produce non-reflective areas. produce non-reflective areas.

18. DVD DrivesDVD Drives
Computer DVD drives can be Computer DVD drives can be
used to watch DVD video, play used to watch DVD video, play
audio CDs and store audio CDs and store
information on DVDs and CDs. information on DVDs and CDs.
DVD drives are now being DVD drives are now being
installed in new computers installed in new computers
instead of CD drives. instead of CD drives.
Computer DVD drives are able Computer DVD drives are able
to read data stored on CD-to read data stored on CD-
ROMS and DVDs and can ROMS and DVDs and can
play both video and audio play both video and audio
DVDs. CD-ROM drives cannot DVDs. CD-ROM drives cannot
read DVDs.read DVDs.

19. Presented by:-Naveen SihagPresented by:-Naveen Sihag