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CHAPTER 2 (c) COMPUTING COMPONENT - Coggle Diagram
CHAPTER 2 (c) COMPUTING COMPONENT
OUTPUT
Data that has been processed into a useful form
Text
Audio
Graphic
Video
DISPLAY
An output device that visually conveys text, graphics, and video information
Sometimes called soft copy
Flat-panel display
Monitor
a display that is packaged as
a separate peripheral device
DISPLAY TECHNOLOGIES
LIQUID CRYSTAL DISPLAY (LCD)
Sandwiches a liquid compound between two sheets of material that presents sharp, flicker-free images on a screen when illuminated
The light source, called the backlight, often uses either CCFL (cold cathode fluorescent lamp) or LED (light-emitting diode) technology
Produce color using active-matrix, or TFT (thin-film transistor)
Displays high-quality color that is viewable from all angles
LIGHT EMITTING DIODE (LED)
Consume less power, last longer, and are thinner, lighter, and brighter
May be more expensive
Screens in laptops and mobile devices often use LED backlight technology
ORGANIC LED (OLED)
Uses organic molecules that are self-illuminating and, thus, do not require a backlight
Consume less power and produce an even brighter, easier-to-read display
Have a shorter life span
ACTIVE MATRIX LED (AMOLED)
Uses both active-matrix and OLED technologies
High-quality viewing from all angles with lower power consumption
RETINA DISPLAY
Developed by Apple
Produces vibrant colors and supports viewing from all angles
LCD technology is built into the screen
Graphics Processing Unit (GPU)
controls the manipulation and display of graphics on a display device
DISPLAY QUALITY
Resolution
the number of horizontal and vertical pixels in a display
Response time
the time in milliseconds (ms) that it takes to turn a pixel on
or off
Nit
a unit of visible light intensity equal to one candela per square meter
Dot Pitch
sometimes called pixel pitch
the distance in millimeters between pixels on a display
Contrast Ratio
describes the difference in light intensity between the brightest white and darkest black that can be produced on a display
DVI (Digital Video Interface) Port
enables digital signals to transmit directly to a monitor
HDMI (High-Definition Media Interface) Port
combines DVI with high-definition (HD) television, audio, and video
DisplayPort
an alternative to DVI that also supports high definition audio and video
HDTV (high-definition television)
working with digital broadcast signals
transmitting digital sound
supporting wide screens
providing high resolutions
Smart TV
an Internet-enabled HDTV from which you can browse the web, stream video from online media services and more — all while watching a television show
PRINTER
Nonimpact Printer
forms characters and graphics on a piece of paper without actually contacting the paper
some spray ink, while
others use heat or pressure to create images
Impact Printer
forms characters and graphics on a piece of paper by striking a mechanism against an inked ribbon that physically contacts the paper
An output device that produces text and graphics on a physical medium
A hard copy, also called a printout, is either in portrait or landscape orientation
NONIMPACT PRINTER
INK - JET PRINTER
forms characters and graphics by spraying tiny drops of liquid ink onto a piece of paper
print on other materials, such as envelopes, labels, index cards, greeting card paper
the speed of an ink-jet printer is measured by the number of pages per minute
PHOTO PRINTER
a color printer that produces lab-quality photos
PictBridge is a standard technology that allows you to print photos directly from a digital camera by connecting a cable from the digital camera to a USB port on the printer
LASER PRINTER
laser printers process and store the entire page before they actually print it
creates images using a laser beam and powdered ink, called toner
ALL - IN - ONE PRINTER
also called a multifunction printer (MFP)
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
3 - D PRINTER
uses a process called additive manufacturing
to create an object by adding material to a
three-dimensional object, one horizontal layer
at a time
THERMAL PRINTER
generates images by pushing electrically heated pins
against heat-sensitive paper
the print quality is low
the images tend to fade over time
thermal paper can be expensive
a dye-sublimation printer, sometimes called a digital photo printer, uses heat to transfer colored dye to specially coated paper
MOBILE PRINTER
a small, lightweight, battery-powered printer
print from a laptop, smartphone, or other mobile
device while traveling
LABEL PRINTER
a small printer that prints on an adhesive-type material that can be placed on a variety of items
PLOTTER
sophisticated printers used to produce high-quality
drawings, such as blueprints, maps, and circuit diagrams
a large-format printer creates photo-realistic-quality color prints
SPEAKER
Most surround sound computer speaker systems include
one or two center speakers and two or more satellite speakers that are positioned so that sound emits from all
directions
Speakers typically have tone and volume controls, allowing users to adjust settings
To boost the low bass sounds, surround sound speaker systems also include a subwoofer
HEADPHONE AND EARBUD
Include noise-cancelling technology to reduce the interference of sounds from the surrounding
A headset is a device that functions as both headphones
and a microphone
DATA PROJECTOR
A device that projects the text and images displaying on a computer or mobile device screen on a larger screen so that an audience can see the image clearly
LCD PROJECTOR
uses its own light source to display the information shown on the computer screen
Digital Light Processing (DLP) projector
uses tiny mirrors to reflect light
INTERACTIVE WHITEBOARD
A touch-sensitive device, resembling a dry-erase board, that displays the image on a connected computer screen, usually via a projector