A counter is to be programmed to keep track of the number of parts coming off a production line.
If you wanted to subtract the number of rejected parts so your counter would count only the good parts, you would program:
A. two up-counters.
B. two down-counters.
C. an up/down-counter.
D. a counter with a transitional contact input.
Show Answer
Answer: C
Share your understanding of this question with the correct explanation.