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.

LESSON4_数码管动态扫描显示.ppt

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