Hi, is there a way to limit the output of the 74160 4-bit decade counter to a specific range?
For example, I only want it to count like this:
00
01
10
11

Then restart to 00

I care only about the first 2 bits.

 

Use a 74161 binary counter, and ignore the other bits.

 

Yes. Decode the outputs and reset the counter synchronously. This technique is commonly used to build state machines.

You can use a NAND gate (7400). It will go low when both inputs are high. The low going output is exactly what you need to feed the RESET pin which is active low.

 

Use a 74161 binary counter, and ignore the other bits.

Thanks!

 

This is homework and is related to this thread.

@maxdha You should put posts related to schoolwork in the Homework Help forum so members don't inadvertently help you cheat.

 

This is homework and is related to this thread.

@maxdha You should put posts related to schoolwork in the Homework Help forum so members don't inadvertently help you cheat.

Sorry, will do this next time!

 

Sorry, will do this next time!

BTW, I simulated the decoder in the schematic you posted and it didn't work.

It would be helpful if you specified which letter position it was for and posted your truth table and Kmaps.

 

BTW, I simulated the decoder in the schematic you posted and it didn't work.

It would be helpful if you specified which letter position it was for and posted your truth table and Kmaps.

I already got it working, thanks! Just ordered the 555 and 4-bit counters to finish my project.

I'm only using d0 and d1, and the rest is always lit up.
And it's working very well!

 

I'm only using d0 and d1, and the rest is always lit up.
And it's working very well!

If you're going to be serious about electronics, learn to read (where are the truth tables and Kmaps?), stop using that breadboard thing, and draw more compact schematics with no scenic routes and unnecessary wire crossings.