LED点阵书写显示屏

LED Lattice Mriting Display

采用三极管驱动16块8×8LED点阵,组成单片机控制的32×32LED点阵书写显示屏,书写笔的感测信号判断译码器动态扫描位置,通过液晶屏对点阵状态实时显示,配合合理的驱动电路与程序,可在LED点阵屏上实现"点亮、划亮、反显、整屏擦除、笔画擦除、连写多字、对象拖移"等书写和显示功能.另外,为了提高使用效率,使用电能转换效率达到75%以上的开关电源为模块供电,大大提高了电能的利用效率,积极响应了国家节能减排的号召.

puter-controlled Using 16 transi LED dot matrix scan to determine the location of stor-driven 8×8 LED dot-matrix,to compose 32 × 32 microcom- display for writing,writing pen sensing signal decoder dynamic dot-matrix LCD screen through the state of real-time display to meet the a reasonable driver circuits and procedures are available to achieve,＂light, zoned light,inverse,and entire screen erase, stroke erase, write more characters continuously, objects drag＂and other writing and display capabilities on LED dot matrix diaplay. In addition,in order to increase efficiency,the use of the switch power supply with power conversion efficiency up to 75 % or more for the module has greatly increased the efficiency of energy use,activiely responding to the call of the national energy-saving emission reduction.