| The design and research is based on the intention of enlarging the displaying function of LED for an corporation. So it remained its primary hardware and upgrade the DOS version to Windows one.Firstly, it is mainly described that the abroad application of lattice display screen and the present situation of the technology, and itssignificance as well, the structure of stock display screen, the basic constitute theory of control card and relevant circuit design. The main hardware circuit includes main control circuit, the exchange circuit of data and address, the share of RAM, the display circuit, the drive of row and column, the coding circuit and the power of switch. The relevant software design is modularized and its flowchart diagrams is detailed described.At the end of this paper, some advice for getting the software system are put forward. |
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