ABSTRACT
It has been widely applied to many occasions that need to be announced and publicized, such as bank, posts, tax administration, airport, securities market and other trading markets, hospital, electricity, customs and stadium in recent years.
The LED display designed this time is a flat screen that is made up of light emitting diode dot matrix module. Single-chip was adopted. The implementation of control function is to combine the advantages of both the hardware and the software. Single-chip and relevant software are mainly used for storage (or generate) display data, arranging the timing and sequence of control signals and the communication with the upper computer, etc. The hardware circuit is the supplement of the single-chip with its limited driving ability. It can be divided into three parts: the hardware of the computer itself, the display driving circuit and the signal control circuit.
Keywords: Single chip, Light emitting diode, Scan driving mechanism
