When does the output of a NAND gate = 1?
Answer: A
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What is the name of a digital circuit that produces several repetitive digital waveforms?
Answer: C
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Parallel adders are
Answer: A
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What is the minimum number of two-input NAND gates used to perform the function of two input OR gate ?
Answer: C
Y=A+B. This is the equation of OR gate. We require 3 NAND gates to create OR gate. We can also write
After 1st NAND operation
Y = (A AND B)'
Y= A' + B' (Demorgan's Law)
After 2nd NAND operation
Y= ( A' + B')'
Y= A . B (Demorgan's Law)
After 3rd NAND operation
Y= ( A . B )'
Y= A' + B ' (Demorgan's Law)
So we need 3 NAND gates.
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CMOS IC packages are available in ________.
Answer: C
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A NOR gate and an OR gate operate in exactly the same way.
Answer: B
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Which of the following choices meets the minimum requirement needed to create specialized waveforms that are used in digital control and sequencing circuits?
Answer: A
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How many inputs of a four-input AND gate must be HIGH in order for the output of the logic gate to go HIGH?
Answer: D
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When reading a Boolean expression, what does the word "NOT" indicate?
Answer: B
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A device used to display one or more digital signals so that they can be compared to expected timing diagrams for the signals is a:
Answer: C
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