Output device

AL-HADI ACADEMY

SUBMITTED BY: M.BAQAR ZAIDI
SUBMITTED TO: MISS SABIKA

Friday, January 10, 2014

PRESENTATION:OUTPUT DEVICES

1

DEFINITION:
Any device that outputs information from a computer is called an
output device.



2





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


THE MONITOR
THE PRINTER
THE PLOTTER
THE SPEAKER
FACSIMILE TRANSMISSION
INTERNET TELEPHONY
MULTIFUNCTIONAL DEVICES



3

DEFINITION:
The monitor is the most common and the most important output
device. It is also called a visual display unit. The output viewed on
a monitor is called soft copy.



4








THE CATHODE RAY TUBE (CRT)
THE LIQUID CRYSTAL DISPLAY (LCD)
THE PLASMA SCREEN
THE E-BOOK READER
THE DATA PROJECTER
HIGH-DEFINITION TELEVITION (HDTV)



5

DEFINITION:
CRT stands for Cathode Ray Tube. CRT monitors are older types of
monitors. The are curved and bulky.

.



6

DEFINITION:
LCD stands for Liquid Crystal Display. LCD monitors are more
advanced. They provide a flat image and do not flicker.

.



7

DEFINITION:
Plasma screens are bright screens that can be produced in large
size (up to 84 inches). They are used in televisions and are more
expensive than CRTs and LCDs.



8

DEFINITION:
An E-book (electronic book) reader is a hand-held, book-sized device
that displays text and graphics



9

DEFINITION:
A data projector projects output on a large screen or wall. Data
projectors are used to give presentations in class rooms and offices.



10

DEFINITION:
High-definition television applies microcomputer technology to
television. It is also called PC/TV. HDTV gives a clearer and more
detailed wide-screen picture than ordinary TV.



11

DEFINITION:
A printer is an output devices to print text and
images on paper or other media. Such output is
hard copy



12

THE LASER PRINTER
THE THERMAL PRINTER
THE INK-JET PRINTER
THE DOT-MATERIX PRINTER


13

DEFINITION:
The laser printer can print large quantities at a great speed. It
is also called page printer because it print a complete page at a
time. There are two types of laser printer.
1.Personal laser printer
2.Shared laser printer



14

DEFINITION:
A thermal printer is a printer that uses heat to burn an image
onto specially-treated paper. These printers are used at some
POS terminals.



15

DEFINITION:
An ink-jet printer prints text and images by spraying ink of
different colours at a high speed. The speed is measured in
page per minute (ppm).



16

DEFINITION:
A dot-matrix printer printers character and images by using a
series of small pins on a print head. It is also called a character
printer because it prints one character at a time.



17

DEFINITION:
A plotter is a special printer that produces high-quality
output using pens. Plotters create large-sized, multicolored
documents like maps and engineering drawing.



18

DEFINITION:
A speaker transmits output in the form of sound. A sound
card installed on a computer produces high-quality sound
for music and games.



19

DEFINATION:
A fax machine sends and receives messages over telephone
lines. It uses regular telephone lines to send copies of
document which may include drawings as well as text.



20

DEFINITION:
Internet telephony uses the internet instead of telephone lines to connect
two or more people via telephone calls can be made cheaply. Microphone
and headset/speaker are connected to the computer at the two ends. This
can be used like a telephone receiver to have conversations.



21

DEFINITION:
Multifunctional devices combine the capabilities of a scanner ,fax
machine ,printer and a photocopier. The quality of output is poorer
than produced by separate , single-purpose devices



22

Output device

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