摘要
用较少导线来控制数码管的点亮,克服以往数码管控制导线多、易出故障的问题,对工程施工、节约材料成本均具有现实意义。本电路采用将数码管COM端一分为二,驱动电路采用4选1数据选择器将4种驱动信号:高电平"1"、同步信号、反相信号与低电平"0",选出其一进行驱动,做到按要求显示所需数字或字母。本电路结构简单,进行了一定程度的理论分析,实用、可靠。
It is meaningful for the circuit fabrication processing and cost savings to overcome the problems,such as wire digital control systems or more susceptible to failure of the problem,since the less wires is adapted to control the LED＇s light up.In this paper,the circuit divided the COM terminal into two port,drive circuit adopts 4 to 1 Data Selector to drive one of the signals of four kinds of signals： high voltage ＂1＂,synchronous signal,inverting the signal and low voltage ＂0＂,so that the desired number or letter is required to display.The circuit structure is simple,in theory,to a certain degree of theoretical analysis,it is a more practical and reliable circuits.
出处
《机电产品开发与创新》
2011年第6期140-141,120,共3页
Development & Innovation of Machinery & Electrical Products
关键词
数码管
驱动电路
方波
同步
反相
数据选择
控制
digital control
drive circuit
a square wave
synchronous
inverter
data selection
control
