{collapse-item label="[2016 Digital Electricity Experiment] Pure Digital Electricity Program Running Lights"}
The main chip is a counter and 38 decoder, with the signal source directly for the clock, because it is too late to use the 555 for the clock soon after class!
After the completion of the experimental class task, nothing to do for fun, this is also taken away by the younger siblings to use wwwwww
{/collapse-item}