我是新人，很高兴通过朋友介绍得知这个网站。动态显示的特点是将所有位数码管的段选线并联在一起，由位选线控制是哪一位数码管有效。这样一来，就没有必要每一位数码管配一个锁存器，从而大大地简化了硬件电路。选亮数码管采用动态扫描显示。所谓动态扫描显示即轮流向各位数码管送出字形码和相应的位选，利用发光管的余辉和人眼视觉暂留作用，使人的感觉好像各位数码管同时都在显示。动态显示的亮度比静态显示要差一些，所以在选择限流电阻时应略小于静态显示电路中的。

-I was new, I am glad that this site through friends. Dynamic display is characterized by the all-digital segment select lines are connected in parallel, controlled by the bit line selection which a digital effect. As a result, it is not necessary for each one equipped with a digital latch, which greatly simplifies the hardware circuit. Highlight digital tube dynamic scan display. The so-called dynamic scanning display that turns digital sent to you glyph code and the corresponding bit option, the use of light-emitting tube afterglow and the role of persistence of vision of the human eye, people feel as if you are in the same digital tube display. Dynamic display brightness to be worse than the static display, so the choice should be slightly smaller than the current limiting resistor static display circuit.