Author Question: A digital clock model decodes a 1 pulse per second input into seconds, minutes and hours; sixty ... (Read 69 times)

jman1234 · **on:** Jul 28, 2018

A digital clock model decodes a 1 pulse per second input into seconds, minutes and hours; sixty seconds advance minutes, and sixty minutes advance hours. How do hours recycle back to one after 12?

A) The 1 for tens of hours and 2 for ones of hours is detected and resets hours back to zero.
B) The 1 for tens of hours and 2 for ones of hours is detected and resets hours back to 1 o'clock.
C) The 2 is detected and resets the new tens and ones of hours to zero.
D) A MOD 6 counter automatically resets hours to zero.

Question 2

A 4-bit ring counter that requires only four possible output combinations would disregard eleven combinations. What effect would the clock frequency have on the output?

A) The output frequency would be equal to a MOD 16 counter.
B) The output frequency would equal the input frequency.
C) The output frequency would be equal to a MOD 4 counter.
D) None of the above