Heart rate Counter

You have a counter that works, (maybe?) The counter will/should/must have a reset pin, sometimes called a clear pin when the counter reaches "the magic number", maybe determined by diode logic and inverters, taken from the counter outputs will trigger the reset pin of the counter.

Pure diode logic will need a pull up resistor to the supply rail, otherwise not a lot will happen, between now and the next Big Bang, every 6000 years +- 1 pope

As soon as the counter reset is accomplished, its output will hopefully be at zero, so the mish mash of diodes will go back to normal and let the damn counter count again

A good idea is to use XOR gates instead of inverters, and little DIL jumpers as pull ups, or even a rotary binary switch, much easier for setting the "I am equal too" thing. This saves a tremendous amount of (re)soldering.

On the other hand, if you used a down counter... ... .... ....

martin

Doesn't anyone do his own homework any more?

Your IP:

His IP:

Now, if we just knew your instructor's email address...

It's a problem with the Indian call centres (India, as in Asia, for USians).

They have such a high turnover in staff on the educational helplines that many students can't complete their projects on time

So they have to slum it here

martin

The .edu domain kinda gives it away..