What you know about Hardware?

1. GROUP MEMBERS
•MUJAHID SHEIKH 75
•HAMMAD MALIK 90
•NASIR MEHMOOD 86
•MIRZA YASEEN BAIG 67

2. OUTPUT DEVICES

3. INTRODUCTION
•Computer is an electronic machine which
takes input, process it and gets the
output.
so,
•Today we learn about output devices

4. DEFINITION OF OUTPUT
“Data that has been processed into
useful form.”
Or
“The data that has been processed into a
useful form is called OUTPUT.”
• Text
• Audio
• Video
• Graphics

5. DEFINITION OF OUTPUT DEVICES
Any type of hardware component that conveys
information to one or more people.
Output devices are hardware devices that display or
present information to the user or other people.
Output device lets a computer to communicate with you.
The devices which are used to display the data to the user
either in the form of hard copy or soft copy are called
output devices.

6. EXAMPLES OF OUT DEVICES ARE
•Monitor
•Printer
•Speaker
•Headphone

7. TYPES OF OUTPUT
Hard copy Soft copy

8. HARD COPY OUTPUT
•Produced on a paper or some material that
can be touched and carried for being
shown to others
•Permanent in nature and can be kept in
paper files or can be looked at a later time
when the person is not using the computer
•The output printed on paper is called Hard
Copy Output.

9. SOFT COPY OUTPUT
•A soft copy is the unprinted digital
document file. It can usually be viewed
through an appropriate editing program.
•such as word processing programs,
database programs, or presentation
software, depending on the file type.
•The output shown on display screen is
called Soft Copy Output.

10. TYPES OF OUTPUT DEVICES
•Display devices
•Printers
•Speakers ,head phone ,ear buds
•Other output devices

11. OUTPUT DEVICES
PRINTING DEVICES
SPEAKER,HEAD
PHONES
OTHERS
MONITORS
DEVICES

12. DISPLAY DEVICES
•Television
•CRT (Cathode Ray Tube)
•Monitor
•LCD technology
•TFT LCD (Thin Film Transistor Liquid Crystal Display)
•Flat-panel displays
•Gas plasma

13. TELEVISION
•A device with a screen for receiving
television signals.

14. CRT (CATHODE RAY TUBE)
•CRT (CATHODE RAY TUBE) It is basically a vacuum
tube with an electron gun and a fluorescent
screen.
•A coating of red, green and blue are used to form
images in the form of light emitted from the
fluorescent screen.

15. MONITOR
•The monitor is a visual display device to
present output information in the form
of text, graphics, or video on the
monitor screen There are two kinds of
monitor; the flat panel or LCD (Liquid
Crystal Display) monitor and the older
CRT(Cathode Ray Tube) models.

16. LCD TECHNOLOGY
•LCD (liquid crystal display) is the technology used
for displays in notebook and other smaller
computers. Like light-emitting diode (LED) and gas-
plasma technologies, LCDs allow displays to be
much thinner than cathode ray tube (CRT)
technology.

17. TFT LCD (THIN FILM TRANSISTOR LIQUID
CRYSTAL DISPLAY)
•TFT LCD (THIN FILM TRANSISTOR LIQUID CRYSTAL
DISPLAY) LCDs are thin, flat display device made of
color pixels arrayed in front of a light source
(backlight) or reflector. The advantage of LCD
monitors is less space, low power and low

18. GAS PLASMA DISPLAY
•A type of thin display screen, called a flat-panel
display, used in some older portable computers. A
gas-plasma display works by sandwiching neon gas
between two plates. Each plate is coated with a
conductive print.

19. PRINTERS
An output device that produces text and graphics on
a physical medium such as paper or transparency
film.
•Hard copy (printout)
•Softcopy (monitor)
•Portrait vs. landscape
•Printing requirements vary

20. TYPES OF PRINTERS
•Non_ impact printer
•Ink jet printer
•LASER PRINTER
•THERMAL PRINTERS
•MOBILE PRINTERS
•PLOTTER & LARGE FORMAT PRINTERS
•Photo printer
•IMPACT PRINTER

21. NON-IMPACT PRINTERS
•No mechanism strikes the paper
•Spray tiny drops of ink onto the paper
•Both black-and-white and colour
•Resolution measured in dots per inch (dpi)
•Speed measured in pages per minute (ppm)
•Nozzles spray ink
•Much quieter than impact printers
•Ink-jet printers

22. INKJET PRINTER
An ink-jet printer is a type of nonimpact printer that
forms characters and graphics by spraying tiny drops
of liquid ink onto a piece of paper. Ink-jet printers
have become a popular type of color printer for use
in the home.

23. HOW INKJET PRINTER WORKS?

24. MOBILE PRINTER
•Mobile Printer are much Smaller,
•lightweight printer that allows a mobile user to
print from a laptop, mobiles or handheld computer
while travelling.

25. LASER PRINTERS
•Non-impact printer
•High-speed, high-quality
•Very high quality resolution - 300dpi to
1,200 dpi
•Stores entire page before printing it
•Postscript Operates much like a copy
machine
•Toner

26. DOT MATRIX PRINTERS
•Small dots form characters
•Continuous form paper
•More pins on print head means higher quality
•Speed measured in characters per second (cps)

27. THERMAL PRINTERS
•Pushes electrically heated pins
against heat-sensitive paper
•Thermal transfer printer
•Print head heats and melts the
ink of the ink ribbon
to print the dot-composed
character on normal paper

28. PLOTTERS AND LARGE-FORMAT PRINTERS
•Used for high-quality drawings such as blueprints,
maps, circuit diagrams, and signs
•Plotters
•Pen plotters
•Electrostatic plotters
•Large-format printer
•Photo-realistic quality color prints

29. IMPACT PRINTERS
•Printing mechanism strikes paper, ribbon and
character together
•Near letter quality (NLQ)
•Used for multipart forms
•strikes through multiple layers of paper

30. WHENEVER YOU WANT TO BUY A PRINTER !
•What is my budget?
•How fast must my printer print?
•Do I need a color printer?
•What is the cost per page for printing?
•Will I print graphics?
•What sizes of paper does the printer accept?
•How much do I print?
•Will the printer be connected to a network?

31. AUDIO OUTPUT DEVICES
•Produce music, speech, or other sounds
•Sound card
•Headsets

32. AUDIO OUTPUT DEVICES
•Speakers
•Stereo speakers and woofer
•Headphones and Earbuds

33. VOICE RESPONSE SYSTEM
•Voice response system enables a computer to
talk to a user
•• Has an audio-response device that produces
audio output
•Such systems are of two types:–
•Voice reproduction systems
•Speech synthesizers

34. VOICE REPRODUCTION SYSTEM
•Produce audio output by selecting an appropriate
audio output from a set of pre-recorded audio
responses
•Applications include audio help for guiding how to
operate a system, automatic answering machines,
video games, etc.

35. SPEECH SYNTHESIZER
•Converts text information into spoken sentences
•Used for applications such as: –
•Reading out text information to blind persons
•Allowing those persons who cannot speak to
communicate effectively
•Translating an entered text into spoken words in
a selected language

36. ASSISTIVE TECHNOLOGY INPUT AND OUTPUT
Users with limited hand movement
can use a head-mounted pointer to
control the pointer or insertion
point. The switch might be a hand
pad, a foot pedal, a receptor that
detects facial motions, or a
pneumatic instrument controlled by
puffs of air.

37. OTHER OUTPUT DEVICES
•DATA PROJECTORS
•ITERACTIVE WHITE BOARDS
•FORCE FEED BACK GAME CONTROLLER

38. PROJECTORS
Projector is a device that takes the text and images
displaying on a computer or mobile
Device screen and projects the images on a larger
screen so that an audience can see the image clearly
Data projectors

39. INTERACTIVE WHITEBOARDS
An interactive whiteboard is a
touch-sensitive device,
resembling a dry-erase board,
that displays the image on a
connected computer screen,
usually via a projector. A
presenter controls the program
by clicking a remote control,
touching the whiteboard,

40. •Joysticks, wheels, gamepads, and motion-sensing
game
•controllers are input devices used to control
movements
•and actions of a player or object in computer
games, simulations, and video games.
JOYSTICKS, WHEELS, GAMEPADS

41. CONCLUSION
•Without output devices the user cannot
experience the image ,sound, color &
visibility of the data. Any device
that outputs information from a computer
is called an output device. Since
information from a computer is output in
either a visual or auditory format.
•The most common output devices are
the monitor and speakers. These two
devices provide instant feedback to the