Output Devices Output Device: An output device is a peripheral device that enable us to view or hear the computer’s processed data. It takes processed results from the processor and presents useful information to the user in human understandable form. Types of Output Devices: Monitors Printers Plotter Audio Output : Sound card and speakers Cathode-ray tube (CRT) Resemble televisions Use picture tube technology Less expensive than a LCD monitor Take up more desk space and use more energy than LCD monitors Passive-matrix LCD Active-matrix LCD Gas plasma display Field emission display Types of Non - Impact Printers: Laser Printers Ink - jet printers

1. TRINITY INSTITUTE OF PROFESSIONAL STUDIES
Sector – 9, Dwarka Institutional Area, New Delhi-75
Affiliated G.G.S.IP.U, Delhi
BCA
ICIT
(20107)
RITIKA KAPOOR
ASSISTANT PROFESSOR

2. TRINITY INSTITUTE OF PROFESSIONAL STUDIES
Sector – 9, Dwarka Institutional Area, New Delhi-75
Output Devices
• Output Device:
 An output device is a peripheral device that
enable us to view or hear the computer’s
processed data.
 It takes processed results from the processor
and presents useful information to the user in
human understandable form.

3. TRINITY INSTITUTE OF PROFESSIONAL STUDIES
Sector – 9, Dwarka Institutional Area, New Delhi-75
Output Devices
• Types of Output Devices:
 Monitors
 Printers
 Plotter
 Audio Output : Sound card and speakers

4. TRINITY INSTITUTE OF PROFESSIONAL STUDIES
Sector – 9, Dwarka Institutional Area, New Delhi-75
Output Devices
• Monitors
A monitor is a peripheral device which displays
computer output on a screen.
• Screen output is referred to as soft copy.
• Types of monitors:
– Cathode-ray tube (CRT)
– Liquid Crystal Display (LCD or flat-panel)

5. TRINITY INSTITUTE OF PROFESSIONAL STUDIES
Sector – 9, Dwarka Institutional Area, New Delhi-75
Cathode-ray tube (CRT)
• Resemble televisions
• Use picture tube technology
• Less expensive than a LCD monitor
• Take up more desk space and use more energy
than LCD monitors

6. TRINITY INSTITUTE OF PROFESSIONAL STUDIES
Sector – 9, Dwarka Institutional Area, New Delhi-75
Liquid Crystal Display (LCD)
• Cells sandwiched between two transparent layers form images
• Used for notebook computers, PDAs, cellular phones, and personal
computers
• More expensive than a CRT monitor
• Take up less desk space and use less energy than CRT monitors
• Types of LCD monitors:
– Passive-matrix LCD
– Active-matrix LCD
– Gas plasma display
– Field emission display

7. TRINITY INSTITUTE OF PROFESSIONAL STUDIES
Sector – 9, Dwarka Institutional Area, New Delhi-75
Output devices
• Printers
A printer is a peripheral device that produces
a physical copy or hard copy of the computer’s
output.
Types of Printers:
• Impact Printers
• Non – Impact Printers

8. TRINITY INSTITUTE OF PROFESSIONAL STUDIES
Sector – 9, Dwarka Institutional Area, New Delhi-75
Types of Printers
• Impact Printers
• There is some physical contact with the paper
to produce the image ie physically striking the
paper
• Types of Impact Printers:
– Line printers
– Dot matrix printers

9. TRINITY INSTITUTE OF PROFESSIONAL STUDIES
Sector – 9, Dwarka Institutional Area, New Delhi-75
Impact Printers
• Line printers
– Used by mainframes for
jobs that need a large volume of printing
– Limited characters available
– Print an entire line at a time
– Cheap to run
– Not high quality

10. TRINITY INSTITUTE OF PROFESSIONAL STUDIES
Sector – 9, Dwarka Institutional Area, New Delhi-75
Impact Printers
• Dot Matrix Printer
• Have a print head made up of columns of pins
– The pins form characters and images as patterns
of dots produced when the pins strike the paper
– Reasonable quality text and graphics
– Inexpensive to buy and run
– Noisy

11. TRINITY INSTITUTE OF PROFESSIONAL STUDIES
Sector – 9, Dwarka Institutional Area, New Delhi-75
Types of Printers
• Inkjet printer, also called a bubble-jet, makes
characters by inserting dots of ink onto paper
• Letter-quality printouts
• Cost of printer is inexpensive but ink is costly

12. TRINITY INSTITUTE OF PROFESSIONAL STUDIES
Sector – 9, Dwarka Institutional Area, New Delhi-75
Non-Impact Printers
Types of Non - Impact Printers:
• Laser Printers
• Ink - jet printers

13. TRINITY INSTITUTE OF PROFESSIONAL STUDIES
Sector – 9, Dwarka Institutional Area, New Delhi-75
Non – Impact Printers
• Laser printer works like a copier
• Quality determined by dots per inch (dpi)
produced
• Color printers available
• Expensive initial costs but cheaper to operate
per page

14. TRINITY INSTITUTE OF PROFESSIONAL STUDIES
Sector – 9, Dwarka Institutional Area, New Delhi-75
Non – Impact Printers
• Ink-jet Printers
– Dots of ink are sprayed onto the paper to form the
image
– Reasonably high quality
– Available in colour or B/W
– Speed measured in pages per minute
– Reasonably priced
– Expensive to run

15. TRINITY INSTITUTE OF PROFESSIONAL STUDIES
Sector – 9, Dwarka Institutional Area, New Delhi-75
Output Devices
• Plotter
• A plotter is a printer that uses a pen that
moves over a large revolving sheet of paper.
• It is used in engineering, drafting, map
making, and seismology.

16. TRINITY INSTITUTE OF PROFESSIONAL STUDIES
Sector – 9, Dwarka Institutional Area, New Delhi-75
Output Devices
• Audio Output: Sound Cards and Speakers
• Audio output is the ability of the computer to
output sound.
• Two components are needed:
– Sound card – Plays contents of digitized
recordings
– Speakers – Attach to sound card

17. TRINITY INSTITUTE OF PROFESSIONAL STUDIES
Sector – 9, Dwarka Institutional Area, New Delhi-75
Thank You