基于单片机的点阵滚屏显示器的设计

AbstractThe LED is light emitting diode.Diode is made of gallium (Ga)and arsenic (As),phosphorus (P)and nitrogen (N),indium (In)elements,when electrons and holesintegrate can radiate light,thus it can be used to make light emitting diode.In thecircuit and equipment it act as light,or display the words or figures.And if the diodehas different elements it will emits different colors of visible light.LED industry hasdeveloped rapidly and has became a new industry which has a certain scale,and onthe whole,macro environment is beneficial to the LED industry develop,so the LEDindustry has prospect,huge market potential.This design has realized scroll of graphics on 16 x 64 LED which based onAT89C51.This article mainly introduced the he function and principle of hardwarecircuit of LED dot matrix display,each part and the design idea and function ofcorresponding programming.This design using the modulus software to get the modelof graphics,using C language to write the display program,HEX file generated byKeilC integrated development platform.The clock,reset,drives,16 x64 LED dotmatrix of hardware circuit will be designed and connect with AT89C51 in the Proteus,and then do system simulation and debugging.This design has the advantage ofusability is strong,easy to realize operation etc.KEY WORDS Single chip microcomputer:Diode;LED dot matrix:Graphicdisplay:Hardware circuit