LDX advertising: E-type card (time partition) (U disk and dual serial communication function) 1, supports 4 sweep, sweep 8, 16 sweep, supports a variety of indoor, outdoor, semi-outdoor single color display board, one card can be set arbitrarily. 2, the maximum controllable range of monochrome 40960 points, two-color half points, built-in 3 12 3 08 interface and the interface, led display, can be expanded to eight interfaces. With the rapid development of the past two years LED display, LED control card market has become more extensive, especially in 2009 just starting a new U disk LED control card is used the most, can be connected to the computer serial port, can also be U disk transmission of information, outdoor full color led display price, saving computer, free routing, support for analog clock, water border, U disk LED control card can save computer, saving wiring. LDX advertising brief display ratio is the ratio of the definition of the maximum brightness value (white) divided by the minimum brightness value (black) ratio. The ratio of the CRT monitor is usually up to 500: 1, so that presents a real all-black screen on the CRT display is easy. But LCD is not very easy, backlight cold cathode ray tube is composed of hard to do fast switching operation, so the backlight is always in the lit state. In order to get a black screen, the LCD module must be completely light coming from the backlight completely blocked, led display is generally how much money one square, but on the physical characteristics of these components and can not fully meet this requirement, will always be There are some light leakage occurs. In general, the ratio of the human eye can accept about 250: 1. How much led display a square _ LDX do word factory _led Display Co. provided by Shanxi Xuan DS culture media. Shanxi Xuan DS Media Limited (www.sxdxzs.com/) is a leader in Taiyuan, advertising services, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. In LDX doing word factory leadership with the staff warmly welcome all inquiries negotiations to create the word factory LDX do a better future.