LED display system and principles of engineering and technology
First of all, introduced the theme of the development and application profile. In the first chapter describes the LED display the basic working principle and features detailed information on the specific LED dot matrix display and circuit parameters. The second chapter for the wider use of graphic display, introducing the basic component, the LED display on the part of the circuit conducted an in-depth analysis, and gives full practical hardware circuit diagram and a list of all the assembly language program. The third chapter is a screen image, focus on the analysis of the gray-control methods, and introduced the integrated electric TLC5902 character and application. Chapter IV discussed at the time of-the-art video displays, video sources, LED video displays the structure of the major integrated circuit chip, as well as supporting applications, and so on, were introduced ZQL9701, DS90C031 chips such as the technical characteristics of And LEDSHOW, “ LED management tools such as software & rdquo use. I also accompanied by a book of the LED industry standards. The book can engage in various types of LED displays the work of the engineers for information may also be related to professional colleges as a teaching reference books or materials.

Foreword
Is to use light-emitting diode array module or modules of the pixel-plane display screen. Because of its high light-emitting, long service life, flexible configuration, as well as the rich colors of the indoor and outdoor environment adaptability, and so on the merits, since the late 1980s, beginning with the manufacture of LED technology constantly improving, is widely abroad Applications. China's reform and opening up, especially in the 90's high-speed economic growth, public release of information on the needs of an increasingly strong, LED display is to adapt to the emergence of this market, which in the design and manufacture of technology and application level are Have been rapidly improved. Experienced from the monochrome, dual-color graphic display, the screen image, until today's full-color video display of the development process. In terms of the performance period (to increase brightness LED display and blue LED lights, etc.) and system (computerized full-motion display system) and so on have made great progress. Has been achieved ultra-high brightness of the full-color video display standard, it can be said to meet the conditions for a wide range of applications. Application has been throughout its area of transport, securities, telecommunications, advertising, publicity, and so on. China's LED display can be said that the development is basically synchronized with the world level, has formed a considerable potential for the development of the industry. It should be noted that not only China's LED industry in the application of technology was a great success, but also in the ability to innovate on its outstanding performance, for example, in Beijing Qing data device developed by the company ZQL9701 ultra-large-scale chip, it represents the current LED display Screen control circuit of international standards.

LED display with the rapid development of the industry, is currently on the LED display information on the book appears to be too little, not easy to design and manufacture and use of maintenance staff, which prepared the germination of an LED display technology used book Idea coincides with the University of Electronic Science and Technology Publishing House at the invitation, and, dare to write the book on the grass. In the book were on the LED display profile, LED display, graphic display, image display, video display technology, and other related issues are described, with a view to engaging in various activities undertaken by the readers of this book can be a number of Useful materials.

Because it is an integrated multi-application products, opto-electronics involved, semiconductor devices, digital electronic circuits, large-scale integrated circuits, and single-chip computer and other road side and also ways to spend a larger space to carry out, easy to dilute the theme. On the other hand, and use single-chip integrated circuits, such as simple and universal access engraved with the reference LED significant hardware and software. All are self-sufficient in the field, this book can not go on and on references can only be directly intended to show the parts, not to pursue the completion of the related technology of its own; Second, the widespread use of popular programs into a simple program does not Can be related to the pursuit of advanced technology. For example, in some of the control circuit, the conventional integrated circuits can be realized, and face, not only to avoid all that technology, "Congtouyueqi" of trouble in order to achieve the goal of streamlining the content of focus. The description does not have a screen for discussion. In dealing with related books in the field of technology has taken the following two responses: one, focusing on-screen description of the main line to introduce the technology in the LED screen in the application of non-mining devices.