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Monday, December 26, 2011
Ultra External Hard Disk Enclosure
Sunday, December 18, 2011
LCD Vs Plasma HDTV
LCD vs plasma HDTV - which is best? If you're looking for a flat-screen, slim and sexy display, to watch HDTV, you have a choice of two technologies, LCD and gas plasma.
Each has benefits and disadvantages and so each is more appropriate in specific
circumstances.
Historically, the LCD vs plasma HDTV choice has been fairly simple. If you wanted a
flat-screen that was about 40in or bigger, you had to choose plasma, otherwise you
should choose LCD. However, as LCD technology improves, LCD HDTVs are getting
bigger and most of the major manufacturers expect the number of LCDs they
produce to grow steadily over the next few years while the number of plasmas will
decrease. However, if you're looking for a flatscreen TV today, plasma still has a lot
to offer.
To understand the LCD vs plasma HDTV question, we need to look at the way the
two technologies work.
LCD
LCD HDTVs work by shining a light behind an LCD panel made up of a fixed number
of pixels. Each pixel is either red, blue or green and is switched on or off when a
voltage is applied to it. When voltage is applied to a pixel, it is switched off,
meaning that light can't shine through it.
The main advantage of LCD vs plasma HDTV is that LCD panels don't suffer from
what's called burn-in. This is a feature of plasma TVs where they are used to watch
TV stations with logos permanently displayed on-screen or where they are used for
video gaming with games that have static images such as a cockpit on flight
simulators. The image literally 'burns-in' the screen meaning that even when the
image is not present you can still see a faint trace of it on screen. So for video
gamers in particular, LCD is a better choice than plasma.
Plasma
Plasma HDTVs have over a million chambers which house one or a combination of
gasses. When a voltage is applied to one of these chambers the gas ionizes and
emits ultra-violet light. This light strikes red, green or plue phophors coated on the
inside of the chamber and a pixel emits this color light.
Plasma HDTVs tend to have better contrast than LCDs because, even when a pixel
on an LCD panel is switched off it doesn't block all the light coming through and
therefore the pixel isn't completely black. Plasma HDTVs also tend to have a wider
viewing angle than LCDs, as on LCD HDTVs the contrast and colour of the image can
change when the screen is viewed from different angles.
LCD vs Plasma HDTV conclusion
Technology is changing rapidly, but for now (July 2004) it's still true to say that at
sizes of 40in and above, plasma offers a less-expensive and generally better
solution. For screen-sizes less than 40in LCD is better. However, as LCD technology
improves and prices fall, this will change.
Monday, December 12, 2011
Bose Wave Music System - An Honest Review
Bose Corporation has been in the tabletop radio/music system business since 1984.The newest result of its efforts, the Bose Music Wave System, offers the same simplicity for which its products are well known for. Instead of the previous version's top-loading CD player, this new version has a front-loading one. In addition to that, there are no longer buttons on the front. Instead, you control the system by use of a small remote that handles both the stereo's CD and radio functions. The buttons on the remote are clearly labeled for ease of use. Unfortunately, the size of the remote makes it very easy to lose.
One of the objectives that the Bose Corporation had with the Bose Music Wave System was to decrease its size while improving the quality of the sound. They managed to achieve this goal, to the point that its speakers are of better quality than many other more expensive systems. However, the remote does not have any control over the loudness of the treble or the bass. If you feel that there is an imbalance between these two, you are out of luck.
Another good selling point for the Bose Music Wave System is that it sports a 30-day free trial period. Therefore, if you are unhappy with the lack of buttons, the quality of the sound, or anything else, you have a chance to return it, free of charge. The clock on the system is quite handy where you can set alarms and wake up to CD or radio music. You also have a choice in color between platinum white and slate gray.