Kamis, 24 April 2014

What are the differences between LCD HDTVs and Plasma HDTVs?

Q. What are their Pros and Cons?

A. LCD HDTVs:

LCD uses little pixels which contain liquid crystals inside of them. These liquid crystals alternate to block out certain spectrums of light, so that the viewer only sees the colour allowed to pass through the pixel. When a million pixels (720p TV) or 2 million pixels (1080p TV) are put together side-by-side, the viewer sees one complete picture.

Pros:
- Longer life span (theoretically)
- Great for brightly lit rooms
- Is now available at bigger sizes like 65"
- No burn-in
- Cheaper to repair
- Uses less electricity

Cons:
- Prone to dead pixels
- Visible artifacts due to slow refresh rates (generally 60Hz)
- Harder to see in brightly lit rooms
- Plastic Screen


Plasma HDTVs:

Plasma HDTVs uses pixels that contain gases like Neon or Argon. When an electric current comes into contact with these gases, the gases heat up and turn into the plasma (thus the name), and because they are so hot, they glow. The colour they emit varies according to the electric current. Because the gases can change colour almost instantly (unlike the LCD's liquid crystals which need to alternate), they have a really high refresh rate.

Pros:
- Fantastic for dark rooms
- Glass Screen
- Very accurate colours
- Deeper blacks
- Comes in very big sizes
- Barely any artifacts due to high refresh rate

Cons:
- Uses more electricity (it'll end up costing no more than 5 cents a month)
- Prone to burn-in (if you leave the sae image on your screen for a long time)
- Slowly dims until the gases completely lose their luminosity
- Very expensive to repair
- LCD is slowly beginning to dominate HDTV market


Hope I helped!


What do I need to connect my laptop and desktop to my lcd hdtv?
Q. What do I need to buy? what are the connections called that my tv needs to do this? Is there any way I can do this wireless?

A. LCD HDTVs usually have HDMI ports. If your computer has an HDMI output, all you need is a standard HDMI cable to connect the two. HDMI is also compatible with DVI, so if your computer has a DVI output you can use a DVI-to-HDMI cable to connect to your LCD HDTV.

If your computer only has an old VGA port, hopefully your LCD HDTV has a VGA port too. If it does, you use a standard VGA monitor cable.

And no, there is no practical way to wirelessly transmit video from your computer to an HDTV, unless you are willing to pony up $800 for a WHDMI extender: http://reviews.cnet.com/audio-video-distribution/gefen-ext-whdmi-wireless/4505-14101_7-32365996.html





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