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 characteristics of all digital tube segment-select lines are connected in parallel, controlled by the bit line selection is effectively what a digital pipe. Thus, it is not necessary to a digital tube equipped with a latch, thereby greatly simplifying the hardware circuit. Highlight digital tube dynamic scan display. The so-called dynamic scanning display that is alternately sent to you digital tube the glyph code and Choice, the afterglow light tube and the persistence of vision of the human eye, people feel as if you digital tube in the display. The dynamic display brightness than static display to be worse, so the choice of the current limiting resistor should be slightly less than the static display circuit.