what us the potential timing problem for a shift register?

10. What is the output frequency of the last FF in a decade counter that is clocked with a 30 kHz clock signal? 11. True or false: All BCD counters are decade counters. 12. If a counter contained 5 FF's, what is the MOD number of the counter? 13. If a MOD-8 counter is in the 101 state, what will be the state after 9 clock pulses? 14. What circuit changes will convert a synchronous binary up counter into a binary down counter? 15. What is the difference between a counter and a state machine