# Making a binary clock

Discussion in 'Homework Help' started by Skyx10, Apr 30, 2013.

1. ### Skyx10 Thread Starter New Member

Apr 29, 2013
2
0
Hey guys I'm making a binary clock and I'm having trouble making the hours aspect of it. I managed to set up the minutes to increment up by 1 for every 60 seconds. I can only use JK flip flops and this is a school project so any help would be great.

2. ### t06afre AAC Fanatic!

May 11, 2009
5,939
1,222
looks like you are on the correct track. For the discussion it is always smart post your schematic in the first post. You say only JK flip flops. But I guess it is also allowed to use logical gates? I would have solved this by using logical gates to sense then the hours was equal to 24. And used this signal to clear all hours flip flips.

3. ### Skyx10 Thread Starter New Member

Apr 29, 2013
2
0
Well it's a school project and I don't believe that our professor taught us about logical gates and he said to use jk flip flops.

http://oi41.tinypic.com/30wl3bt.jpg this is the schematic I drew up so far.

4. ### tshuck Well-Known Member

Oct 18, 2012
3,531
675
..it's either time to change schools, or relearn combinational logic as no decent school will teach you flip flops before basic AND, OR, NOT, etc.

The hours section can be implemented with a modulus counter that counts from 1 to 12, or 0 to 23, depending on format...

5. ### t06afre AAC Fanatic!

May 11, 2009
5,939
1,222
You have logical gates in your schematic Logical gates=AND,OR, NOT and so on. At least for me, it could be that you have some other name for them.

6. ### atferrari AAC Fanatic!

Jan 6, 2004
2,663
784
It would be interesting to know how he calls them...

7. ### Wendy Moderator

Mar 24, 2008
20,772
2,540
Have you looked at Bill Bowden's website? Try googling it.