Digital currency transactions allow users to convert existing digital currencies into other digital currencies. The entire transaction does not involve any legal tender. Because of the relatively loose regulation, the mainstream digital currency trading platform also opened this function.Digital Asset Exchange (DAE) is a platform for matching transactions between digital currencies, digital currencies and legal currencies. It is the main place for encrypting the circulation and price determination of digital currency transactions. Currency Exchange,Digital Currency Exchange,Virtual Digital Currency Exchange,Display Currency Exchange China youbi digital assets limited , https://www.ubcoinchina.com
Compared with traditional stock exchanges, digital asset trading platform not only matches transactions, but also plays the role of market maker and investment bank. The role of the market maker in the trading platform can increase the liquidity of the market, and the trading platform can earn the transaction price difference. The role of the investment bank of the trading platform is to provide services such as issuance and underwriting of digital currency, from which the trading platform collects money fees, or collects deposits in the form of community voting of the trading platform.
LED basics: LED display is classified according to the application site
LED display is classified according to the application site
Electronic banners, electronic subtitles, and LED subtitles all belong to the LED electronic display. So, how is it classified? According to different application places, LED electronic display can be divided into indoor LED display and outdoor LED display.
Indoor LED display
Mainly used indoors, in the production process, the light-emitting die is first made into a dot matrix module (or digital tube), and then the module is spliced ​​into a certain size display unit board. According to user requirements, the display unit board is used as a basic unit. The size required by the user.
According to the size of the pixel, the indoor LED display is divided into Ф2, Ф3, Ф3.75, Ф4.8, Ф5, Ф8, Ф10 and so on.
Outdoor LED display
Mainly used for outdoor use. In the manufacturing process, the light-emitting die is first packaged into a single light-emitting diode, which is called a single lamp. The single lamp used to make the outdoor LED display is generally improved by using a reflective reflector with a collecting effect. Brightness; then, a plurality of LED single lamps are packaged into a single pixel tube or a pixel module, and a pixel tube or a pixel module is used to form a dot matrix display unit box, and a display unit box is used according to user needs and display application places. The body is the size required for the basic unit composition. The cabinet should be sealed in design to achieve the purpose of waterproofing and anti-fog, so that it can adapt to the outdoor environment.
According to the size of the pixel, the outdoor LED display is divided into *11, Ф14, *16, *19, *21, *26, Ф36 and other specifications.
LED display is classified according to the primary color
According to the color of the LED used, the LED display can be divided into single primary color, double primary color, and full color.
Single primary color LED display
Each pixel has only one color, and most of them use red. Because red has higher luminous efficiency, it can get higher brightness. It can also use green or mixed color, that is, part is red, part is green, and part is yellow. .
Double primary color LED display
Each pixel has two primary colors, red and green, which can be superimposed with yellow. In the case of gamma control, up to 65,535 colors can be combined by varying the red and green gradations.
Full color LED display
Also known as the three primary colors, each pixel has three primary colors of red, green and blue. In the case of grayscale control, the natural color can be restored well by changing the different grayscales of red, green and blue, and 16777216 colors are combined. .
According to the functions of the LED electronic display, the LED display can be divided into three types: strip screen, graphic screen, video screen and digital screen.
LED strip screen
This type of display is mainly used for displaying text. It has its own 16X16 or 24X24 dot matrix font. It can work independently. It can input Chinese characters with the remote control. The electronic banner can also be used online with the computer to send information through the computer. Can work offline. Because such LED subtitles are mostly made into strips to display electronic subtitles, they are called strip screens.
LED graphic screen
This type of display is mainly used to display text and graphics, generally without grayscale control. It enters information by communicating with a computer. Compared with the strip screen, the advantage of the graphic screen is that the displayed fonts are rich in fonts and can display graphics. Compared with the video screen, the biggest advantage of the graphic LED display is that one computer can control multiple screens and can take off Machine display.
Video LED display
Such display screen pixels and the control computer monitor pixels have a one-to-one mapping relationship, with grayscale control, so its expressive power is extremely rich, the configuration of the multimedia card, the video screen can also play video signals. The video LED display is open and reflects the display of the computer monitor in real time.
LED digital screen
Digital screen is the cheapest LED display, widely used in bank exchange rate, interest rate display, hotel seafood price list, room price list and so on. In most cases, a strip screen is added to the digital screen to make up for the inadequacy of the digital screen.
LED hybrid screen
That is, the dot matrix digital hybrid display, which is used most for the securities market display.