Because dot matrix LCD module with information-rich display (can display Chinese characters, characters, curves, graphics), low power consumption, small size, light weight, long life, does not produce electromagnetic radiation pollution, etc., so it is ideal SCM system a display device. In recent years, has been widely used microprocessor controlled intelligent instrumentation, industrial control, communications equipment and household appliances. Currently, the domestic in the SCM system for Chinese display, the lcd module using the following deficiencies exist.
① ROM occupies a large space. To graphically display Chinese characters, each character will occupy 32 bytes of ROM space, thus limiting the number of characters to display Chinese characters. This point smaller number of internal Flash memory of the microcontroller, particularly affected.
② The microcontroller hardware interface circuit complexity. In addition to this type of module used eight data lines, still need to use the chip select, register select, read / write select, enable control and other control lines, making for microcontroller hardware resource usage is more serious.
③ Interface Timing complex software programming complicated.
The use of Chinese graphic TFT Display
Module is relatively simple hardware interface and simple user commands, designed for embedded systems shows large amount of information and information-rich display of all Chinese human-machine interface, LCD module to avoid the traditional Chinese graphical display of complex hardware interface design and software programming. The module is designed for embedded systems, human-machine interface provides a better solution.
lcd module displays screen splicing present the main application areas include security, command centers, entertainment industry, company presentations, advertising, media, exhibition center, electricity, education and so on. Advantages of lcd -screen high-resolution, high-brightness, high color saturation, flexible tiled display combinations, environmental health, long life, low maintenance costs, viewing angle, low power consumption, low heat, affordable .
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