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驱动7段led显示器有许多种选择，但大都局限于低输出电流。这里描述的方案采用一个作为移位寄存器连接的74als374 或74AS374八路锁存器，对每位进行移位。74als374
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http://blog.alighting.cn/yunaoled/archive/2011/7/19/230231.html2011/7/19 15:46:00
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用的材料是砷(AS)化??(ga) ,其正向pn结压降(vf,可以理解为点亮或工作电压)为1.424v,发出的光线为红外光谱。另一种常用的led材料为磷(p)化??(ga),其正向pn
http://blog.alighting.cn/q89481240/archive/2011/7/17/229921.html2011/7/17 23:17:00
