hi

[otibu addo]

i have been given a home work to develop a clock using 60 LEDs, my problem is how do i design the diagram and what do i need?

 

[blueroomelectronics]

60 LEDs and a mcrocontroller is one way. Another might be a half dozen Johnson decade counters like the CD4017

 

[EN0]

A guy did something like this with all transistors instead of an IC. I think it took about 200 transistors in order to accomplish a effective clock, nowadays you can simply get it in an IC. I don't know of any IC's out there that would do the trick, but If you google it I'm sure you could find it.

The coinage "googled" is becoming more popular!

 

[birdman0_o]

How accurate does it need to be?

 

[EN0]

How accurate does it need to be?

I'm sure he'd like it to be as accurate as possible. Does that answer your question?

 

[birdman0_o]

I'm sure he'd like it to be as accurate as possible. Does that answer your question?

If that's the case then running the 4017's with a 555 is out of the question

 

[EN0]

If that's the case then running the 4017's with a 555 is out of the question

True, but then it would depend on his budget and also his preference. Would he like to afford a better clock with more accurate circuitry involved, or does he want to make do with parts he may already have?

 

[blueroomelectronics]

Based on the specification in the original post 60 LEDs and a 60 position rotary switch and just turn the knob once per minute would work.