How to use Counters ONLY to construct a School Bell circuit?

Hey guys,

I am really stuck here, our instructor told us not to use the 555 timer (and to be honest I never used it ). So we are supposed to make a circuit by using counters only, I guess.

How can I generate time periods, and set time in seconds or minutes? Is Johnson Counter the best to use here?

I included a file describing how would the periods go, if any one could help me on that.
My project is due to next Monday, and I would be really grateful if someone could give me and idea or a hint to start.

There has been at least one other thread on this topic recently. Try searching this site.

alec_t said:

There has been at least one other thread on this topic recently. Try searching this site.

Click to expand...

I did search, and somehow all the topics related are based on the 555 timer?
Anyway thanks dude

One recent thread (by other kids in your class?) shows a CD4060 oscillator/counter.
A CD4536 and a CD4541 are oscillator/programmable timers.

Your teacher is lazy and does not teach you how to use counters and timers. The datasheets for the ICs explain how to use them.