Advantages And Disadvantages Of CRT Monitors

Monitor with glass tubes using a CRT (cathode ray tube) has evolved, from the monitor into a convex shape monitord ith FST technology (flatter square tube), the tube technology with a more square shape and flat. Based on the video adapter, CRT monitors can be divided into four types as follows.

1. MDA (Monochome DISPLAY ADAPTER)
Monitor with text display and the kinds of colors, such as red, green, or biru.Terdapat two type.i.Tipe TTL with a resolution of 720 x 350 pixelii.Tipe CGA with a resolution of 640 x 200 pixelSetiap character has a density of 7 x9 point to the type of TTL.

2. CGA (COLOR GRAPHICS ADAPTER)
Color monitor first manufactured by IBM in 1981.Sudah recognize text and graphics and has 16 warna.Resolusi chart 320 x 200 pixel.Setiap character has a pixel density of 7 x9 point.

3. EGA (ENHANCED GRAPHICS ADAPTER)
Color monitor, manufactured in 1981, coinciding with the release of IBM PC AT.Memiliki 46 warna.Resolusi chart 640 x 340 pixel.Setiap character has a pixel density of 7 x 9 points.

4. VGA (MONITOR GRAPHICS ARRAY)
Color monitor, manufactured by IBM in 1986 along with IBMPS / 2. Warna.Resolusi 256 has a 720 x 400 pixel.Setiap character has a density of 9 x 16 dots.

The workings of CRT Monitor
In a cathode ray tube, an electron - the electrons are carefully directed into a beam, and the beam is didefleksi by a magnetic field to scan the surface of the tip of pandan (anode), which is inline with phosphorescent material (usually based on transition metals or rate earth). When the electron touches the material on this screen, the electron will cause the light.

Advantages of CRT Monitors
1. Color is more accurate and vivid color CRT .Monitor accurate or nearly identical to the original. Because of these reasons was the designers and photo editors prefer to use CRT than LCD. In addition, the gradation of color CRT monitors still better than the LCD.

2. Flexible monitor resolution. CRT monitors can use different variations of the resolution without decreasing image quality.

3. Maintenance is easy, if damaged can be serviced. Maintenance CRT monitors are still easier than the LCD, LCD perawatanya should be extra careful. Moreover, if the damaged CRT monitor is still serviceable, while the broken LCD is definitely went in the garbage. In addition, CRT monitors are more resistant if bumped or touched a finger on the display

4. Free of dead pixels, ghosting, and viewing angle. CRT monitors are not made up of pixels such as LCD, so it obviously will not have a dead pixel. CRT monitors can dilahat from all sides, unlike LCD viewing angle depending on the specifications. CRT monitors do not know the response time, so it is relatively free of ghosting effects.

5. Prices are cheaper. The advantages in terms of price that makes the CRT monitor is still popular.


Disadvantages of CRT Monitor
1. Consumption of electricity. CRT monitors consume electrical power than 2X inch LCD at the same size.

2. Depending on refreshrate. So that the eyes are not tired of using a CRT monitor, use refreshrate over 70Hz. High end CRT monitors are able to offer 120Hz refreshrate up even more. The higher the better, of course. This does not apply to the LCD monitor.

3. Radiation larger. Undeniably, CRT monitors emit radiation that is greater than the LCD monitor. This radiation has a negative impact on the eye so that the eyes get tired or even create a headache for those who are sensitive.

4. Vulnerable distortion, glare and flicker. This is a classic problem for CRT monitors. Distortion effect will be seen when we draw a circle using CorelDraw or other software. If refreshrate too low, causing the monitor be blinking (flicker) and glare (over brightness).

5 Dimensions of large and heavy. CRT monitors have a large size and weight, so it is not suitable for narrow rooms, because a lot of eating places. Quite melelahkn if the monitor frequently moved around for quite heavy.

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