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Subel. E
6 questions
Subelement E

Digital Logic

Section 34

Logic Gates

What is a characteristic of an AND gate?

  • Produces a logic “0” at its output only if all inputs are logic “1”.
  • Correct Answer
    Produces a logic “1” at its output only if all inputs are logic “1”.
  • Produces a logic “1” at its output if only one input is a logic “1”.
  • Produces a logic “1” at its output if all inputs are logic “0”.

What is a characteristic of an AND gate?

Produces a logic “1” at its output only if all inputs are logic “1”.

From wp2ahg:

An AND gate produces a logic "1" if all of its inputs are logic "1" also.

This is a case of "1 and 1 = 1"

Logic "1" equates to "True". So, it's just like a statement of fact. If any component of the statement is false, the whole statement is false:

"I am human AND I am a cat"
Logically, I can't be both human and cat so this statement is FALSE.

True AND False = False   or   1 AND 0 = 0

But, if both arguments (inputs) are true ("1"), then the result is also true ("1").

I am human AND I am male = TRUE "1" AND "1" = "1"

See Wikipedia's article on Logic gate.

For more information, please see the TechTarget site for the article logic gate (AND, OR, XOR, NOT, NAND, NOR and XNOR)

Also, see the Tutorials Point site for the article Logic Gates

Last edited by markadlerdallas. Register to edit

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What is a characteristic of a NAND gate?

  • Produces a logic “0” at its output only when all inputs are logic “0”.
  • Produces a logic “1” at its output only when all inputs are logic “1”.
  • Produces a logic “0” at its output if some but not all of its inputs are logic “1”.
  • Correct Answer
    Produces a logic “0” at its output only when all inputs are logic “1”.

What is a characteristic of a NAND gate?

Produces a logic “0” at its output only when all inputs are logic “1”.

From wp2ahg:

Logic "1" equates to "True". So, it's just like a statement of fact. If any component of the statement is false, the whole statement is false:

"I am human AND I am a cat"
Logically, I can't be both human and cat so this statement is FALSE.

True AND False = False   or   1 AND 0 = 0

But, if both arguments (inputs) are true ("1"), then the result is also true ("1").

I am human AND I am male = TRUE "1" AND "1" = "1"

See Wikipedia's article on Logic gate.

For more information, please see the TechTarget site for the article logic gate (AND, OR, XOR, NOT, NAND, NOR and XNOR)

Also, see the Tutorials Point site for the article Logic Gates

Last edited by markadlerdallas. Register to edit

Tags: none

What is a characteristic of an OR gate?

  • Correct Answer
    Produces a logic “1” at its output if any input is logic “1”.
  • Produces a logic “0” at its output if any input is logic “1”.
  • Produces a logic “0” at its output if all inputs are logic “1”.
  • Produces a logic “1” at its output if all inputs are logic “0”.

What is a characteristic of an OR gate?

(A).   Produces a logic “1” at its output if any input is logic “1”.

From wp2ahg:

Logic "1" equates to "True". So, it's just like a statement of fact. If any component of the statement is false, the whole statement is false:

"I am human AND I am a cat"
Logically, I can't be both human and cat so this statement is FALSE.

True AND False = False   or   1 AND 0 = 0

But, if both arguments (inputs) are true ("1"), then the result is also true ("1").

I am human AND I am male = TRUE "1" AND "1" = "1"

See Wikipedia's article on Logic gate.

For more information, please see the TechTarget site for the article logic gate (AND, OR, XOR, NOT, NAND, NOR and XNOR)

Also, see the Tutorials Point site for the article Logic Gates

Last edited by markadlerdallas. Register to edit

Tags: none

What is a characteristic of a NOR gate?

  • Produces a logic “0” at its output only if all inputs are logic “0”.
  • Produces a logic “1” at its output only if all inputs are logic “1”.
  • Correct Answer
    Produces a logic “0” at its output if any or all inputs are logic “1”.
  • Produces a logic “1” at its output if some but not all of its inputs are logic “1”.

What is a characteristic of a NOR gate?

(C).   Produces a logic “0” at its output if any or all inputs are logic “1”.

From wp2ahg:

Logic "1" equates to "True". So, it's just like a statement of fact. If any component of the statement is false, the whole statement is false:

"I am human AND I am a cat"
Logically, I can't be both human and cat so this statement is FALSE.

True AND False = False   or   1 AND 0 = 0

But, if both arguments (inputs) are true ("1"), then the result is also true ("1").

I am human AND I am male = TRUE "1" AND "1" = "1"

See Wikipedia's article on Logic gate.

For more information, please see the TechTarget site for the article logic gate (AND, OR, XOR, NOT, NAND, NOR and XNOR)

Also, see the Tutorials Point site for the article Logic Gates

Last edited by markadlerdallas. Register to edit

Tags: none

What is a characteristic of a NOT gate?

  • Does not allow data transmission when its input is high.
  • Correct Answer
    Produces a logic “0” at its output when the input is logic “1” and vice versa.
  • Allows data transmission only when its input is high.
  • Produces a logic "1" at its output when the input is logic "1" and vice versa.

What is a characteristic of a NOT gate?

(B).   Produces a logic “0” at its output when the input is logic “1” and vice versa.

From wp2ahg:

Logic "1" equates to "True". So, it's just like a statement of fact. If any component of the statement is false, the whole statement is false:

"I am human AND I am a cat"
Logically, I can't be both human and cat so this statement is FALSE.

True AND False = False   or   1 AND 0 = 0

But, if both arguments (inputs) are true ("1"), then the result is also true ("1").

I am human AND I am male = TRUE "1" AND "1" = "1"

See Wikipedia's article on Logic gate.

For more information, please see the TechTarget site for the article logic gate (AND, OR, XOR, NOT, NAND, NOR and XNOR)

Also, see the Tutorials Point site for the article Logic Gates

Last edited by markadlerdallas. Register to edit

Tags: none

Which of the following logic gates will provide an active high out when both inputs are active high?

  • NAND.
  • NOR.
  • Correct Answer
    AND.
  • XOR.

Which of the following logic gates will provide an active high out when both inputs are active high?

(C).   AND.

An AND gate produces a logic 1 if all of its inputs are logic 1 also.

This is a case of 1 and 1 = 1

Logic 1 equates to True. So, it's just like a statement of fact. If any component of the statement is false, the whole statement is false:

I am human AND I am a cat"

Logically, I can't be both human and cat so this statement is FALSE.

True AND False = False or 1 AND 0 = 0

But, if both arguments (inputs) are true (1), then the result is also true (1).

e.g. I am human AND I have a head = TRUE, the logic evaluates like 1 AND 1 = 1

See Wikipedia's article on Logic gate.

For more information, please see the TechTarget site for the article logic gate (AND, OR, XOR, NOT, NAND, NOR and XNOR)

Also, see the Tutorials Point site for the article Logic Gates

Last edited by kd7bbc. Register to edit

Tags: none

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