Big LED Digital Clock with 74LS47
Here's a clock with giant displays all done logically, there's nothing programmed. The decoders used for the displays are the 74LS47, the counters are CD4518, to reset the digits to 23 and 59 I used a CD4081, and the frequency from 1Hz is generated by the integrated 4010 - 4020 - 4027.
The watch operates at a voltage of 12V DC with a peak consumption not exceeding 0.40 A.
Electric diagram at 1:20
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WARNING: This video is only for demonstration. I don't take any responsibility for damage to things, people and animals.
#LED #Electronic #Clock