What is the difference between a 7400 and a 7411 IC?
Answer: B
Correct answer: 7400 has four two-input NAND gates; 7411 has three three-input AND gates
The 7400 is the quad two-input NAND that gives the whole family its number, and the 7411 is a triple three-input AND. Both fit a 14-pin package: four gates of two inputs need twelve pins, and three gates of three inputs need twelve as well.
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An inverter output is the complement of its input.
Answer: A
Correct answer: True
An inverter produces the complement of its input by definition: HIGH becomes LOW and LOW becomes HIGH.
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What are the pin numbers of the outputs of the gates in a 7432 IC?
Answer: C
Correct answer: 3, 6, 8, and 11
The 7432 is a quad two-input OR in a 14-pin package, laid out so that each gate takes two adjacent input pins and the next pin is its output. That gives outputs at 3, 6, 8 and 11, with pin 14 for VCC and pin 7 for ground - the same pinout as the 7408 and 7400.
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The output of an OR gate with three inputs, A, B, and C, is LOW when ________.
Answer: A
Correct answer: A = 0, B = 0, C = 0
An OR gate is LOW only when every input is LOW; a single 1 makes the output 1.
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