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1. COMPUTER
HARDWARE

2. COMPUTER HARDWARE
•Is the physical components of the computer ,
•Refers to the tangible ( things you can touch )
components of computer system.

3. •Hardware components are further divided into
three groups
• 1 = INPUT DEVICES
• 2 = OUTPUT DEVICES
• 3 = SYSTEM UNIT

4. 1 = INPUT DEVICES
• An input devices lets you communicate whit a computer .
• You can input devices to enter information and issue commands.
• In computing, an input device is a piece of computer hardware equipment
used to provide data and control signals to an information processing
system such as a computer or information appliance.
• Examples of input devices include keyboards, mouse, scanners, digital
cameras and joysticks.

5. 1 = KEYBOARD
• In computing, a computer keyboard is a
typewriter-style device which uses an
arrangement of buttons or keys to act
as mechanical levers or electronic
switches.
• Following the decline of punch cards
and paper tape, interaction via
teleprinter-style keyboards became the
main input method for computers.

6. 2 = MOUSE
• A computer mouse is a hand-
held pointing device that
detects two-dimensional
motion relative to a surface.
• This motion is typically
translated into the motion of
a pointer on a display, which
allows a smooth control of
the graphical user interface

7. 3 = JOYSTICK
• A joystick is an input device
consisting of a stick that pivots on a
base and reports its angle or
direction to the device it is
controlling.
• A joystick, also known as the control
column, is the principal control
device in the cockpit of many civilian
and military aircraft, either as a
center stick or side-stick.

8. 4 = TRACKBALL
• A trackball is a pointing
device consisting of a ball
held by a socket containing
sensors to detect a rotation
of the ball about two axes—
like an upside-down mouse
with an exposed protruding
ball.

9. 5 = LIGHT PEN
• A light pen is a computer input
device in the form of a light-
sensitive wand used in
conjunction with a computer's
cathode-ray tube display.
• It allows the user to point to
displayed objects or draw on
the screen in a similar way to a
touchscreen but with greater
positional accuracy.

10. 6 = SCANNER
• An image scanner—often
abbreviated to just scanner,
although the term is ambiguous
out of context —is a device that
optically scans images, printed text,
handwriting or an object and
converts it to a digital image.

11. 7 = MICROPHONE
• A microphone is a device that
translates sound vibrations in
the air into electronic signals or
scribes them to a recording
medium.
• Microphones enable many
types of audio recording devices
for purposes including
communications of many kinds,
as well as music and speech
recording.

12. 2 = OUTPUT DEVICES
• An output devices displays information on a screen , creates printed
copies or generates sound
• An output device is any piece of computer hardware equipment which
converts information into human-readable form.
• In brief, output unit is responsible for providing the output in user
readable form.
• It can be text, graphics, tactile, audio, and video.

13. 1 = PRINTER
• A printer is a device that
accepts text and graphic
output from a computer and
transfers the information to
paper, usually to standard size
sheets of paper. Printersvary
in size, speed, sophistication,
and cost. In general, more
expensive printers are used
for higher-resolution
color printing.

14. 1 = INKJET
• Inkjet printing is a type of
computer printing that recreates a
digital image by propelling droplets
of inkonto paper, plastic, or other
substrates.
• Inkjet printersare the most
commonly used type of printer,
and range from small inexpensive
consumer models to expensive
professional machines.

15. 2 = LASER
• A laser printer is a type
of printer that uses a laser and
electrical charge model instead
of the traditional printing of
ink onto paper.Laser
printers have increased the
neatness and sophistication of
print projects, with typical
resolutions of 600 dots per inch
or higher.

16. 3 = IMPACT
• Impact printer refers to a
class of printers that work
by banging a head or
needle against an ink
ribbon to make a mark on
the paper.
• This includes dot-matrix
printers, daisy-
wheel printers, and
line printers.

17. 2 = MONITOR
• A computer monitor is an
output device that
displaysinformation in pictorial
form.
• A monitor usually comprises
the display device, circuitry,
casing, and power supply. ...
Oldermonitors used a cathode
ray tube (CRT).

18. 3 = MULTIMEDIA
• Multimedia is content that
uses a combination of different
content forms such as text,
audio, images, animations,
video and interactive
content.Multimedia contrasts
with media that use only
rudimentary computer displays
such as text-only or traditional
forms of printed or hand-
produced material.

19. 4 = SPEAKER
• A speaker is a term used to
describe the user who is giving
vocal commands to a software
program. 2.
• A computer speaker is a hardware
device that connects to a computer
to generate sound.
• The signal used to produce the
sound that comes from a
computer speaker is created by the
computer's sound card.

20. 3 = SYSTEM UNIT
• System Unit. The system unit, also known as a "tower" or
"chassis," is the main part of a desktop computer.
• It includes the motherboard, CPU, RAM, and other components.
The system unit also includes the case that houses the internal
components of the computer.

21. 1 = MOTHERBOARD
• A motherboard is one of the
most essential parts of a
computer system. It holds
together many of the crucial
components of a computer,
including the central
processing unit (CPU),
memory and connectors for
input and output devices.

22. 2 = IDE SATA
• IDE and SATA are different types of
interfaces to connect storage devices
(like hard drives) to a computer's
system bus. SATA stands for Serial
Advanced Technology Attachment (or
Serial ATA) and IDE is also called
Parallel ATA or PATA. SATA is the
newer standard and SATA drives are ...

23. 3 = HARD – DISK
• A hard disk drive, hard disk,
hard drive, or fixed disk, is an
electro-mechanical data
storage device that uses
magnetic storage to store and
retrieve digital information
using one or more rigid rapidly
rotating disks coated with
magnetic material