关键词： LED，单片机，显示屏，驱动，扫描
Abstract
Along with social culture fast development, People's expense standard changes unceasingly. The outdoor lamps advertisements are playing more and more important propaganda roles. It looks everywhere such as train stations, stock trading markets and schools. But the traditional neon light billboard is unable to satisfy current social the demand in demonstration effect. It has got a great disadvantage such as modifiability. The traditional neon light advertisement wants to be improved urgently. So using the LED electrical display monitor has got the huge social efficiency and the economic efficiency.
This design topic is LED Lattice display system design. It is about how to carry on the ranks signal control for the display module unit of LED and the signaling actuation question, also discussed in the monolithic integrated circuit control system the essential data processing as well as the transmission question, The design will use AT89C51 primarily controller, 74HC595 row actuation and 74HC138 line scan. As well as the synchronized clock outputs and so on allocated-use circuit to realize the lattice trundle, stops and cut demonstration. This system has the very good stability and the accuracy.
