The problem: Design a counter using this chip which counts in base 10 rather than 16. The count should reset at 10, never displaying A on the output chip.



To be honest I'm a bit lost. I was thinking maybe I could maybe use the RESET pin on the chip, or reload it with 0 at the loading pin when the count hits a particular value. Am I on the right track? Please help this is due tomorrow ^.^

 

Logisim is handy for testing ideas.

 

I don't really have any ideas yet!

 

How does 9 in hex differ from 15? Would the states of Qa - Qc be different?

 

Sorry I'm not quite sure what "hex" is. Did you mean something like 9 is 1001 and 15 is 1111 ?

 

Hexadecimal or hex is base 16.

What are the states of the 4 bits that are not allowed for it to be base 10, or Binary Coded Decimal?

 

Start with a truth table.

 

You are going to the right direction with the RESET pin. What needs to be the activation condition of the RESET pin?