Please enable JavaScript.
Coggle requires JavaScript to display documents.
2.5.4 Input and Output devices (Output devices) (Display device (visually…
2.5.4 Input and Output devices (Output devices)
Display device
visually conveys text,
graphics and video information
CRT monitor
– A desktop monitor that uses a cathode-ray tube to
produce images.
– Bigger and bulkier LCD monitor, consume more
power and prone to screen flicker
LCD monitor
– A desktop monitor that uses a liquid crystal
display to produce images.
– Offers sharp, flicker-free images, lighter and
thinner, and more energy saving compared to CRT
monitors
LED monitor
– A display that uses an array of light-emitting
diodes to produce images.
– Offers better color quality, clarity, and better
energy savings
Plasma monitor
– A display device that uses gas plasma technology
to produce images.
– Offer larger screen size and richer colors than LCD
monitor, but more expensive
Printer
produces text and
graphics on a physical medium such as paper
Impact printer
– Forms characters and graphics on a piece of paper
by striking a mechanism against an inked ribbon
that physically contacts the paper.
– Noisy, and print quality is slightly less clear
– Used in business for routine jobs such as printing
labels or multilayers forms.
– Examples of impact printer are dot-matrix printer
and line printer
Nonimpact printers
– Form characters and graphics on a piece of paper
without actually striking the paper.
– Form characters and graphics by spraying ink,
using heat, or using pressure.
– Quiet, and better print quality
Ink-jet printer
– Sprays tiny drops of liquid ink onto a piece of
paper
Laser printer
– Uses laser beam and powdered ink to transfer
images onto paper.
– high-speed and high quality nonimpact printe
Thermal printer
– Generates images by pushing electrically heated
pins against heat sensitive pape
Plotter
– Sophisticated printer used to produce high-quality
drawings such as blue-prints, maps and circuit
diagrams.
– Used in specialized fields such as engineering and
drafting and usually are very costly
Audio output
A component of a computer that produce
music, speech or other sound
Three commonly used audio output devices
are:
– Speakers
– Headphones
– Earbuds
Video output
LCD Projector
– A type of video projector for displaying video,
images or computer data on a screen or other flat
surface.
– It is a modern equivalent of the slide projector or
overhead projector.
HDTV
– HDTV (high definition television) is a the most
advance form of digital television that provide
very high resolution.
– Often used as output for game consoles such as
Microsoft’s Xbox and others.
– Users plug one end of a cable in the game console
and the other end in the video port of the
television
Any hardware component that conveys
information to people