LCM (LCD Module) is an LCD display module and a liquid crystal module. It refers to a component that assembles a liquid crystal display device, a connector, a peripheral circuit for controlling and driving, a PCB circuit board, a backlight, and a structural member. LCM provides users with a standard LCD display driver interface (different types such as 4-bit, 8-bit, VGA, etc.), and the user operates according to the interface requirements to control the LCD to display correctly. Compared with glass, LCM is a more integrated LCD product. For small-size LCD display, LCM can be easily connected to various microcontrollers (such as single-chip microcomputer); however, for large-size or color LCD display, generally Will occupy a considerable part of the control system resources or simply can not achieve control, such as 320 & TImes; 240 256 color color LCM, display 20 seconds / second (that is, 1 second full screen refresh display), only one second of data transmission The quantity is as high as: 320 & TImes; 240 & TImes; 8 & TImes; 20 = 11.71875 Mb or 1.465 MB. If the standard MCS-51 series MCU is processed, it is assumed that the MOVX command is used to continuously transmit the data. Considering the address calculation time, at least 421.875 MHz clock is required. In order to complete the data transmission, it can be seen that the amount of data processed is huge. The resolution of the fax is also the scanning density. The higher the resolution, the higher the accuracy of the scanning. It can be divided into vertical resolution and horizontal resolution. Vertical resolution refers to the number of pixels displayed per millimeter on a vertical horizontal line, and horizontal resolution refers to the number of pixels displayed per millimeter on a parallel horizontal line. According to the international standard of the three types of fax machines, the horizontal resolution is 8 pixels / mm, so the resolution of the fax machine is generally expressed as 8 pixels / mm × vertical pixels / mm, generally we will save the horizontal resolution, only vertical Resolution to represent the resolution. The vertical resolution mainly has three standards: 3.85 pixels/mm, fine 7.7 pixels/mm, and ultra-fine 15.4 pixels/mm. The nominal brightness of LCD monitors is primarily determined by the nominal brightness and contrast of the PANEL used. For LCD monitor products, LCDs are required to have a wide viewing angle because they typically require a fixed view of the video at a distance. And higher brightness and contrast. For PC monitors, the brightness and contrast can be displayed at 200CD/M2 or 300:1, but the brightness and contrast of the monitor generally need to be above 300CD/M2 and 450:1. Its requirements. Therefore, LCD monitors typically use PANEL indicators that are higher than PC monitors. In order to improve the brightness of the monitor, some manufacturers have modified the backlight of PANEL, increasing the number of lamps in the backlight to improve the luminous efficiency of the backlight to improve the brightness of the PANEL. However, the brightness/contrast is not necessarily as large as possible. The quality of the image is not only related to brightness/contrast: image sharpness, color reproduction, signal-to-noise ratio and other properties are also very important. As with the CRT monitor adjustment, the brightness/contrast is not as large as possible when adjusting the LCD monitor. The normal adjustment effect is to make the display result reproduce from black to white or from white to black. That is, it is observed that the excessive image in the light and dark changes is a uniform transition, and whether the image is bright and not glare, clear and not hard. It must be pointed out that some manufacturers over-exaggerate their indicators when describing the brightness/contrast of their products, such as "Brightness 2000CD/M2, Contrast 5000:1", etc., in fact, if the indicators are described by these manufacturers, This kind of screen looks like a searchlight, and you may not even look at it. high speed motor,high speed dc motor,high rpm dc motor Shenzhen Maintex Intelligent Control Co., Ltd. , https://www.maintexmotor.com
What is LCM, what does LCM mean?