Broad view of different types of computer Monitors...

1. By the 24th
reaper
typeS OF MONItOrS
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2. TYPES OF
MONITORS
• CRT
• Cathode Ray Tube
• LCD
• Liquid Crystal
Display
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3. CR
T
• The filaments at the back of
the cathode tube shoot a
beam of electrons to the
screen at the front of the tube
• This screen is coated with
phosphor that glows when
struck by the electron beam.
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4. LCD
• LCD stands for Liquid Crystal
Display.
• An LCD panel produces an
image using a liquid crystal
material made of large, easily
polarized molecules
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5. • Active matrix
• Most common
• Contains cells of liquid
crystal, a matrix of thin-
film transistors (TFT)
• provides a much
brighter, sharper
display
• Passive matrix
• Dual-scan display
• Has a row of
transistors running on
the top of the screen
as well as the left of
the screen
TYPES OF LCD
PANELS
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6. FEATURES OF A
MONITOR
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7. FLAT SCREEN MONITORS
LCD - PlasmaLCD - Plasma
• Picture Quality
• Normal computing, both LCD and plasma screens will
provide sharp and clear display
• Watching Blu-Ray movies or playing high-definition games,
Plasma screens have less picture lag and sharper color
resolution than LCD displays.
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8. LCD - PLASMA
• Power Usage
• LCDs use considerably less power than plasma displays,
which use self-lighting pixels
• Screen Burn-In
• Plasma screens are more likely to experience screen
burn-in (the screen becomes permanently discolored where
the unchanging image was)
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9. LCD - PLASMA
• Pixel Levels
• LCD screens generally have more pixels per square inch
than plasma
• makes them ideal if you are working with complex
spreadsheet programs or editing software
• Size
• Plasma monitors are usually ahead of the curve regarding
their maximum size
• the biggest monitors are plasma
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10. LCD - PLASMA
• Lifespan
• LCD monitors tend to be rated for 60,000-plus hours
• Plasma monitors range from 20,000 to 30,000 hours
• Price
• Comparable pricing
• Expensive
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11. ANALOG – DTV - HDTV
• Analog
• CRT sets
• signal is made of continually varying radio waves that the TV
translates into a picture and sound
• DTV
• United States broadcasting is currently changed to digital
television (DTV )
• The picture, even when displayed on a small TV, is better
quality
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12. HDTV
• 18 Digital TV standards
• HDTV is the highest of all the DTV standards
• Aspect ratio, Resolution, Frame rate determines the differences.
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13. • Aspect ratio - Standard television has a 4:3 aspect ratio -- it is four units wide
by three units high. HDTV has a 16:9 aspect ratio, more like a movie screen.
• Resolution - The lowest standard resolution (SDTV) will be about the same as
analog TV and will go up to 704 x 480 pixels. The highest HDTV resolution is
1920 x 1080 pixels. HDTV can display about ten times as many pixels as an
analog TV set.
• Frame rate - A set's frame rate describes how many times it creates a complete
picture on the screen every second. DTV frame rates usually end in "i" or "p" to
denote whether they are interlaced or progressive. DTV frame rates range from
24p (24 frames per second, progressive) to 60p (60 frames per second,
progressive).
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14. THANK YOU
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