Question

A glitch that appears on the decoded output of a ripple counter is often difficult to see on an oscilloscope because of __________

(a) It is a random event

(b) It occurs less frequently than the normal decoded output

(c) It is very fast

(d) All of the Mentioned

The question was posed to me during a job interview.

Question is from Counter Implementation and Applications in division Counters of Digital Circuits

Answer 1

The correct option is (d) All of the Mentioned

For explanation I would say: A glitch is a transition that occurs before a signal settles to a specific value. A glitch that appears on the decoded output of a ripple counter is often difficult to see on an oscilloscope because it is a random event and very fast and it occurs less frequently than the normal decoded output.