LED display is widely used in the field of information technology (IT). This paper first introduced the present domestic development of LED display, and its historical development, then analyzed the future in many-sided ways.
The chapter 2 mainly introduces the details of LED and their principles and major parameters, then gives some driving circuits.
While the chief content rest to selecting hardware and to compiling the software to accomplish the functions of the display. The software is compiled by assembler language, whose instruction is fast executed, saving the space of storage. In order to make it convenient to extend or revise, the software is designed in cube mode. In this way, the logic relation of the program becomes briefer and clearer, and hardware can performance coordinately under the software’s control.
The third chapter of the content describes the working principle of the hardware, enclosing the bloke diagram of the system designed. And then discusses the technology of each access and the function and process of work of the cubed access, following the description of the pins and hardware structures of 8051 and 8031 MCU. Finally the TPIC6B595 of TI Corporation is introduced and the procedure and achievement of the program are stated. The main ideology of the contest is to combine the software and the hardware together, the latter compiled under the functions of the former which is the base.
At last, the paper detailed discusses the ideology and the test of the software and hardware of the LED display which is exploded to achieve in the MCU methods.
Key words: display; MCU (microcomputer unit); driving circuit