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Electronic Countdown Timer Circuit

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Hi,

I'm am attempting to make a 10 second countdown timer circuit using a 7-Segment Dual Digit Display. I would, ideally, like it to countdown from 10 to 0; wait for about another 10 seconds and then restart.

Do you have any idea as to which chip(s) I should use?
I would gladly appreciate a circuit diagram as well, if possible.

Thanks!
 

You have opened threads in 3 different sections. Moderators don't like that, and may get you penalized. I suggest you delete 2 and keep one in the section of your choice.

Read the forum rules before posting.
 

You can do this by 2 ways

1) use flip flops to construct a counter, a square wave generator for a 1sec clock, and decoders for displaying
2) use microcontroller (no need of separate clock generator, flip flop or decoders)
 

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