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。

-Dynamic display features all the bits of digital control of segment-select line connected in parallel, from the bit selector control which a digital control effectively. Thus, it is not necessary with each of the digital control of a latch, thereby greatly simplifying the hardware circuit. Select the digital control using dynamic light scanning display. The so-called dynamic scan revealed that in turn send to you the digital control code and the corresponding bit font selection, use of LED in the afterglow and the human visual temporary stay in effect, make people feel like you are in the display while the digital control. Dynamic display of the brightness of some worse than a static display, so the choice should be slightly less than the current limiting resistor, a static display in the circuit.