first and foremost I would like to think to the lord that there rise an institution in computer
which is legacy college of compostela that can serve the youth who in one way or another long
for better education I know that there are so many student who can not afford to study in the
city or far away from compostela now this institution served as the best education needed in
our society so a student I'm very much thankful that I study here as a computer technology
student.
HTML
An Informative Comparison between CRT & LCD
CRTs cost less than LCDs. For the same price as an
entry-level 17" LCD, you can buy a midrange 19" CRT or two good 17" CRTs. The
pricing differential has somewhat narrowed recently, but LCDs are likely for the
foreseeable future to cost more than CRTs with similar size, features, and
quality.
CRT Displays
CRT displays use the same picture tube technology with many enhancements as the first color televisions did more than half a century ago. But old doesn't necessarily mean obsolete. A good CRT display, such as the Samsung 997DF 19" model shown below, provides excellent image quality at a reasonable price. CRT displays are an excellent choice for many. Samsung 997DF 19" CRT people, and will remain so for years
Samsung 997DF 19" CRT display
CRT advantages CRT displays have many advantages relative to LCD displays.
PriceVariable resolution
LCDs are designed to operate at one resolution, typically 1024x768 for 15" models and 1280x1024 for 17", 18", and 19" models. Although you can run an LCD at lower resolution than it was designed to use, you don't want to. At nonnative resolution, you must choose between having a sharp image that occupies only a portion of the screen or using pixel extrapolation, which results in a full-screen image with significantly degraded image quality. CRTs, conversely, can operate at various resolutions, which means that you can choose the resolution that suits your own preferences and vision.Service life
A high-quality CRT normally lasts for many years. It's common for a CRT to remain in use for five years or more, and even ten years is not unheard of. LCDs use an array of cold cathode ray tubes (CCRTs), which are similar to fluorescent tubes, to provide the backlight required to view the image. A failed CCRT is not economically repairable. When a CCRT burns out, the LCD display must be replaced. Superior display of fast-motion video CRTs use phosphor pixels, which can be turned on or off almost instantly. LCDs use transistorized pixels that respond more slowly. This slower response may be visible as a smearing or ghosting effect when an LCD displays fast-motion video, such as DVD video or graphics-intensive games. Although better LCDs don't exhibit this problem, at least not as severely as cheaper models, it is common and intrusive with entry-level LCDs. Larger viewing angle CRTs present essentially the same image quality regardless of viewing angle. Conversely, LCDs present their best image quality only within a relatively small viewing angle, although midrange and better LCD models typically have larger viewing angles than entry-level models. Accurate color reproduction Many graphic artists refuse to use LCDs because the appearance of colors and the relationship between them changes with viewing angle. This problem is particularly acute with inexpensive LCDs, although even premium units exhibit it at least to some extent. The best LCD models are good enough in this respect for routine use, but most who insist on accurate color reproduction still prefer high-quality CRT monitors. No pixel defects A CRT never has defective pixels. An LCD panel is manufactured as a monolithic item that contains more than a million pixels, and on some LCD panels one or a few of those pixels are defective. Defective pixels may be always-on (white), always-off (black), or some color. People vary in their reaction to defective pixels. Many don't even notice a defective pixel or two, while others, once they notice a defective pixel, seem to be drawn to that pixel to the exclusion of all else. Most manufacturer warranties specifically exclude some number of defective pixels, typically between five and ten, although the number may vary with display size and, sometimes, with the location of the defective pixels and how closely they are clustered. As long as the display meets those requirements, the manufacturer considers the display to be acceptable. You may or may not find it acceptable. Vibrant color rendering Although the contrast and brightness of recent high-end LCDs are excellent, most LCDs provide subjectively less vibrant color than a good CRT. This is particularly evident in the darkest and lightest areas, where tones seem to be compressed, which limits subtle gradations between light tones or dark tones that are readily evident on a good CRT. Also, some LCDs add a color cast to what should be neutral light or dark tones. For example, dark neutral tones may appear shifted toward the blue (cooler) or red (warmer) ranges. This problem is less prevalent in high-quality LCDs than in entry-level units, and is also more likely to occur if you are using an analog interface rather than a digital interface. If your budget is limited, a CRT offers far more bang for the buck than an LCD and, particularly for entry-level models, overall display quality will also be higher.LCD Displays
LCD displays use a relatively new technology, but all of the early teething problems have long been worked out and the prices of LCD displays have fallen to the point that they are now mainstream products. A good LCD display, such as the ViewSonic VP191 19" model shown below, provides top-notch image quality in a compact package. Although traditional CRTs have advantages of their own, most people who experience the bright, contrasty image of a good LCD display will never return to using a CRT monitor.
No comments:
Post a Comment