集约型51系统板输出通道的改进设计  

Improvement Design to Output Passage Based on Intensive 51 System Plank

作　　者：李云鹤[1] 晏振鸣 

机构地区：[1]茂名学院,广东茂名525000 [2]中国联通湖北分公司运行维护部,湖北武汉437000

出　　处：《现代电子技术》2008年第14期46-48,共3页Modern Electronics Technique

摘　　要：针对目前51系统板输出通道的设计问题,该设计以硬件集约、性价比高、操作容易为原则,创新设计了ISP下载、集约型显示输出、开关信号输出、模拟信号输出等电路。并对LCD电路、LED电路、D/A电路做了元器件比较选择和较大改进,使设计的系统板具有成本低、简单易用的优点。整个输出通道包含LCD显示、LED数码管显示、LED点阵显示3种显示输出、开关量输出、模拟量输出等模块,非常适合在基于单片机的嵌入式系统中应用。The design problem aimed at currently 51 system planks to output passage,this design with hardware intensive, high performance - price ratio, operation easy is principle, the ISP download,intensive output, switch signal output, imitate signal output electric circuit are designed. The LCD,LED and D/A circuit are improved, the designed system plank has advantages of low cost and easy use. Whole output passage includes LCD display, LED figures tube display,LED point display,ISP downloads,switch output and analog output,fits for application of embedded system based on single chip computer.

关 键 词：输出通道 集约型系统板 开关信号输出 元器件比较 

分 类 号：TP368.1[自动化与计算机技术—计算机系统结构]