126. Assume you want to determine the timing diagram for a 4-bit counter using an oscilloscope. The best choice for an oscilloscope trigger signal is ________.
(a) the most significant bit (MSB) (b) the least significant bit (LSB) (c) the clock signal (d) from a composite of the MSB and LSB
Answer
Answer : (c)
Explanation
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5555555555 133. Assume a 4-bit Johnson counter is initially cleared. After the first clock pulse the output is 0001. After the next clock pulse the output will be ________. (a) 0011 (b) 0010 (c) 1000 (d) 0110