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the circuit of static digital display

2016-12-15 00:11  
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the circuit of static digital display
It can be divided into static display and dynamic display as there are two ways of display.Here what we talked about is static display.It is two-bits static digital display.Its main function is displaying the serial number of LED light which is on.If L1 light is on,digital tube will display 11.If L2 is on,digital tube will display 22,ect.The design of the circuit is composed of two 8-bits shift register (74HC164), two 8-sections LEB digital tube( Common anode) and two 8×330Ω exclusion .