Determine the output frequency for a binary counter that contains ...

[tiara099]

Determine the output frequency for a binary counter that contains twelve flip-flops with an input clock frequency of 20.48 MHz.
 
  A) 15 kHz B) 30.24 kHz C) 5 kHz D) 10.24 kHz

Question 2

As a general rule for stable flip-flop triggering, the clock pulse rise and fall times must be:
 
  A) very short.
  B) at a maximum value to enable the input control signals to stabilize.
  C) of no consequence as long as the levels are within the determinate range of values.
  D) very long.

[robbielu01]

Answer to Question 1

C

Answer to Question 2

A