An 8- bit counter is wired as follows: The CLK input to the first stage (LSB) is the system clock. Each stage's output is used as the CLK input to the next higher stage. This counter is a:
A) MOD 128 synchronous counter.
B) MOD 256 ripple counter.
C) MOD 128 ripple counter.
D) MOD 256 synchronous counter.

Question

Quizplus · Accepted Answer

CAn 8-bit counter can count from 0 to 255, which makes it a MOD 256 counter. Since each stage's output is used as the CLK input to the next higher stage, it operates in a ripple fashion, where the change in state ripples through from the least significant bit (LSB) to the most significant bit (MSB). Therefore, both MOD 256 and ripple counter characteristics apply, making choices B and C correct.

An 8- Bit Counter Is Wired as Follows: the CLK