1. What is Output
Slides By Rana Usman Sattar
Student Of BBA(Hons)
PMAS Arid Agriculture University Rawalpindi
Gmail: ranaa.usman@gmail.com
Facebook: usman.shan86@yahoo.com
2. What is Output
O U T P U T IS DATA THAT HAS BEEN PROCESSED INTO A
USEFUL FORM. THAT IS, COMPUTERS PROCESS DATA
(INPUT) INTO INFORMATION (OUTPUT).
T H E FORM OF OUTPUT VARIES, DEPENDING ON THE
HARDWARE AND SOFTWARE BEING USED AND THE
REQUIREMENTS OF THE USER.
W H I L E W O R K I N G W I T H A C O M P U T E R , A U S E R
ENCOUNTERS FOUR BASIC TYPES OF OUTPUT:
TEXT, GRAPHICS, AUDIO, AND VIDEO.
3. Text
Examples of output that primarily contain text are
memos, letters, press releases, reports, classified
advertisements, envelopes, mailing labels, and text
messages.
On the Web,
users view and print many other types of text based
output. These include blogs, news and magazine
articles, books, television show transcripts, stock
quotes, speeches, and lectures.
4. Graphics
Many forms of output include graphics to
enhance visual appeal and convey information.
Business letters have logos, Reports include
charts. Newsletters use drawings, clip art, and
photos.
5. Audio
Users download their favorite songs
from iTunes and listen to the music while
working on the computer.
Software such as games, encyclopedias, and
simulations often have musical
accompaniments for entertainment
and audio clips, such as narrations and
speeches, to enhance understanding.
6. Audio
Web, users tune into radio and television
stations and listen to audio clips, podcasts,
or live broadcasts of interviews, talk shows,
sporting events, news, music, and concerts.
7. Video
As with audio, software and Web
sites often include video clips to enhance
Understanding.
Instead of renting a movie, users can download
movie content from a Web site for a fee and then
watch the
entire movie on a computer or mobile device.
Attaching a video camera to the computer
allows users to watch home movies on the
computer.
8.
9. Display Devices
A display device, or simply display, is an
output
device that visually conveys text, graphics,
and video information. Information on a display
device, sometimes called soft copy, exists
electronically and appears for a temporary period.
Display devices consist of a screen and the
components that produce the information on
the screen.
10. Most mobile computers and devices integrate
the display and other components into the
same physical case.
o Traditional notebook
o Tablet PCs
o smart phone
o digital camera
o handheld game consoles
o display in the dashboard
11. Types of display devices
A flat-panel display
is a lightweight display device with a shallow
depth and flat screen that typically uses LCD
(liquid crystal display) or gas plasma technology.
A CRT monitor is a desktop monitor that
contains a cathode-ray tube. A cathode-ray tube (CRT
) is a large, sealed glass tube.
13. LCD monitors
An LCD monitor is a desktop monitor that
uses a liquid crystal display to produce images.
These monitors produce sharp, flicker-free
images.
LCD uses a liquid compound to present information
on a display device.
14. LCD Quality
The quality of an LCD monitor or LCD screen
depends primarily on its resolution, response time,
brightness, dot pitch, and contrast ratio.
Resolution is the number of horizontal and vertical
pixels in a display device.
Response time of an LCD monitor or screen is the time
in milliseconds (ms) that it takes to turn a pixel on or off.
Brightness of an LCD monitor or LCD screen is
measured in nits. A nit is a unit of visible light intensity
equal to one candela (formerly called candlepower) per
square meter.
15. Dot pitch sometimes called pixel pitch, is the
distance in millimeters between pixels on a
display device. Text created with a smaller dot
pitch is easier to read.
Contrast ratio describes the difference in light
intensity between the brightest white and
darkest black that can be displayed on an
LCD monitor.
17. A DVI (Digital Video Interface) port enables
digital signals to transmit directly to the LCD
monitor.
An HDMI (High-Definition Media Interface)
port combines DVI with high-definition (HD)
television and video.
They also have a standard monitor port and an
S-video port, allowing users to connect external
analog devices such as a television, DVD/Blu-ray
Disc player, or video recorder, to the computer.
18. Plasma Monitors
A plasma monitor is a display device that
uses gas plasma technology, which
sandwiches a layer of gas between two glass
plates.
When voltage is applied, the gas releases
ultraviolet (UV) light. This UV light causes the
pixels on the screen to glow and
form an image.
19. CRT Monitors
A CRT monitor is a desktop monitor that
contains a cathode-ray tube .
A cathode-ray tube (CRT ) is a large, sealed glass
tube. The front of the tube is the screen. Tiny
dots of phosphor material coat the screen
on a CRT. Inside the CRT, an electron beam
moves back and forth across the back of the
screen. This causes the dots on the front of
the screen to glow, which produces an image
on the screen.
21. Printers
A printer is an output device that produces
text and graphics on a physical medium such
as paper.
Printed information, called hard copy, exists
physically and is a more permanent form of output
than that presented on a display Device (soft opy).
A hard copy, also called a printout, is either in
portrait or landscape orientation.
22. Impact Printers
An impact printer forms characters and graphics on a
piece of paper by striking a mechanism against an
inked ribbon that physically contacts the paper.
Impact printers characteristically are noisy because of
this striking activity.
Companies may use impact printers for routine jobs
such as printing labels.
Impact printers are ideal for printing multipart forms
because they easily print through many layers of paper.
Dot matrix
Daisy wheel
Line Printer
23. Nonimpact Printers
A nonimpact printer forms characters and
graphics on a piece of paper without actually
striking the paper. Some spray ink, while others
use heat or pressure to create images.
Commonly used nonimpact printers are
ink-jet printers, photo printers, laser printers,
thermal printers, mobile printers, label and
postage printers, plotters, and large-format
printers.
24. Ink-Jet Printers
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.
Ink-jet printers also print on other materials such as
envelopes, labels, index cards, greeting card paper
(card stock), transparencies, and iron-on T-shirt transfers.
Many ink-jet printers include software for creating
greeting cards, banners, business cards, and letterhead.
26. Laser Printers
A laser printer is a high-speed, high-quality nonimpact printer.
Laser printers are available in both black-and-white and color
models.
Laser printers print text and graphics in high-quality resolutions,
usually 1200 dpi for black-and-white printers and up to 2400 dpi for
color printers.
Depending on the quality, speed, and type of laser printer, the
cost ranges from a few hundred to a few thousand dollars for the
home and small office user, and several hundred thousand dollars
for the large business user.
Laser printers use software that enables them to interpret a page
description language (PDL), which tells the printer how to arrange
the contents of a printed page.
27.
28. Photo Printers
A photo printer is a color printer that produces
photo-lab-quality pictures
Many photo printers use ink-jet technology
Most photo printers are PictBridge enabled, so that
you can print photos without a computer.
Photo printers also usually have a built-in card
slot(s) so that the printer can print digital photos
directly from a memory card.
29. Multifunction Peripherals
A multifunction peripheral (MFP), also
called an all-in-one device, is a single device
that looks like a printer or a copy machine but
provides the functionality of a printer, scanner,
copy machine, and perhaps a fax machine
30. Thermal Printers
A thermal printer generates images by
pushing electrically heated pins against heat
Sensitive paper.
Basic thermal printers are inexpensive, but the print
quality is low and the images tend to fade over time.
Professional applications requiring high image
quality, such as photography studios, medical labs,
and security identification systems
31. Mobile Printers
A mobile printer is a small, lightweight, battery-
powered
printer that allows a mobile user to print from a
notebook
computer, smart phone, or other mobile device while
traveling Mobile printers mainly use ink-jet, thermal,
thermal wax-transfer, or dye-sublimation technology.
Many of these printers connect to a USB port.
Others have a built-in wireless port through which they
Communicate with the computer wirelessly.
32. Label and Postage Printers
A label printer is a small printer that
prints
on an adhesive-type material (Figure 6-23)
that can be placed on a variety of items such
as envelopes, packages, optical discs, photos, file
folders, and toys. Most label printers also print
bar codes. Label printers typically use thermal
technology.
A postage printer is a special type of label
printer that prints postage stamps. Some have
built-in digital scales for weighing letters and
packages.
33. Plotters and Large-Format Printers
Plotters are sophisticated printers used to produce
high-quality drawings such as blueprints, maps, and circuit
diagrams.
These printers are used in specialized fields such as
engineering and drafting and usually are very costly.
Using ink-jet printer technology, but on a much larger
scale,
a large-format printer creates photo-realistic-quality color
prints.
Graphic artists use these high-cost, high performance
printers for signs, posters, and other professional quality
displays
35. Speakers, Headphones, and Ear buds
An audio output device is a component of a
computer that produces music, speech, or
Other sounds, such as beeps. Three
commonly used audio output devices are
Speakers
Headphones
Ear buds
36. Data Projectors
A data projector is a device that takes the
text and images displaying on a computer
screen and projects them on a larger screen
so that an audience can see the image clearly.
