May be this would get you started... 3 JK Flip flops that would count to six.

View attachment 96302

Look for /10 and /12 circuits that use JKFF on the net.

Allen

The digital clock schematic I remember from years ago, was published in the back of a Henry's radio catalogue.

By the time I'd gathered most of the parts - an LSI chip was cheaper and *MUCH* easier.

 

thanks but i want just one clock by jk f/f and use dcd_hex (p.s I‘m not good in english )

And I will ask again, what is "dcd_hex"?

 

JoeJester said: ↑
ok ... is it 12 hour format or 24 hour format?

Can you draw a block diagram of what you need to do?
no just one clock by jk f/f

So you were asked if you could provide a block diagram of what you need to do and you simply refused and restated, apparently, that you expect people here to read your mind, figure out what you want, do all the work, and then hand it over to you so that you can submit it as your own and claim the credit for it.

Other than putting your name on it and turning it in, is there anything that YOU are planning to do?

 

And I will ask again, what is "dcd_hex"?

like seven seg com

 

like seven seg com

Are you sure you don't mean BCD (binary-coded decimal)?

 

So you were asked if you could provide a block diagram of what you need to do and you simply refused and restated, apparently, that you expect people here to read your mind, figure out what you want, do all the work, and then hand it over to you so that you can submit it as your own and claim the credit for it.

Other than putting your name on it and turning it in, is there anything that YOU are planning to do?

i have one problem in the time when the counter

Are you sure you don't mean BCD (binary-coded decimal)?

yes the same one but in the multisim it named dcd ( I hope u will understand me )

 

Are you sure you don't mean BCD (binary-coded decimal)?

It's probably Multisim's way of abbreviating "decoder". It is not necessarily a BCD decoder.

 

i have one problem in the time when the counter

This I do not understand at all.

You say that you have to make a clock. What kind of clock? What does this clock need to be able to do? There are lots of different kinds of clocks and, quite often, the "clock" in a basic digital electronics course is a "clock" only in name because it has been simplified so much.

How many total seven-segment displays is your clock going to need?

What do each of those displays represent?

yes the same one but in the multisim it named dcd ( I hope u will understand me )

Okay, so it sounds like you need your logic to produce BCD outputs. That's one thing settled.

 

Hello,

The dcd_hex is an 7 seg display with decoder.
Here is the discription from the attached component list:



Bertus

 

Thanks, DerStrom8 and bertus. It looks like the DCD_HEX only has 3 inputs. I'm guessing that is just an imaging artifact and that it actually has four.

 

Thanks, DerStrom8 and bertus. It looks like the DCD_HEX only has 3 inputs. I'm guessing that is just an imaging artifact and that it actually has four.

3 lines could be octal, but why would be just another mystery.

 

Repeating yourself by attaching the same file again does not move the discussion forward.

And you can't post a decent PDF or PNG? A photo of your screen? Really?