How to Choose Monitors
Posted in Computer Hardware Repair by freetaotaoHow to Choose Monitors?If you want to buy one, the following technical indicators may be help you!
(1), type
A, cathode ray tube (CRT) monitors (also known as picture tube or CRT) displays used earliest, which technology is mature, inexpensive longer life expectancy, the principle is the electron beam raster scan, the structure similar to the on the TV.
B, liquid crystal displays ,looks like a less dark color glass, it’s encapsulated by two piece of glass before and after, filled with liquid crystal material between the two. the cathode-ray tube voltage is 10KV-30KV.
(2), the main technical indicators.
A, size. 14-inch (356MM diagonal) 15 inch (381MM) 17 inch (432MM)
B, dot pitch, and pitch.
C, resolution
D, vertical scanning frequency (field frequency) 60-90 (72 or more light flashes significantly reduced)
E, horizontal scan frequency (line frequency)
F, interlaced scanning and progressive scanning.
G, bandwidth.
H, electromagnetic radiation standard: MPR-Ⅱ, TCO92
I, Green function
J, Plug and Play
K, surface treatment, tables etching coating. AGAS COATING silicon coating. ARAS COATING anti-reflective, anti-static coating (available through the normal cleaning detergent). ULRA-CLEAR COATING ultra-clear coating. (Samsung-specific)
L, with the screen display
M, numerical and simulation.
N, screen curvature, imaging management structure according to its appearance can be divided into the following three types. (1) sphere (general) (2), cylinder (3), flat right-angle (FTM)
O, CRT Type: Shadow mask type and raster type. Samsung Nematodirus CRT.
P, Connectors
Q, color temperature (different color temperature determine the different color of white, some blue light component more, some yellow, light elements and more national standards, GB/T931-1995 should provide the color temperature 9600K and 5300K.)
R, display data channel, DDC, Plug and Play capabilities to support Microsoft.
S, Dynamic Focus.
T, 89 color control
U, super-black-screen moments Chen
V, no flicker
3, visual display identifying the pros and cons.
A, differential scanning frequency is high or low, horizontal scan rate should reach 48KH2.
B, to judge whether is the progressive-scan display, connected to the graphics accelerator card (card with at least 2MB of display cache), and then gradually raise the display mode, when the resolution reaches a certain ratio (for example, 800 * 600), Interlaced displays have the feeling of flickering, while the progressive displays do not. From the description of view, only the horizontal scan frequency is higher than 48.4KH2 display is only possible support high-resolution progressive scan.
C, identification of video bandwidth.
D, differential display of color targets
E, to determine grating distortion



