首页闪卡复习 O-LEVEL COMPUTER-SCIENCE10 boolean logic

boolean logic

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10 boolean logic

boolean logic

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问题

What is Boolean logic?

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闪卡 1

问题

What is Boolean logic?

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答案

Boolean logic is a system used in computer science and electronics to make logical decisions, where operators are either TRUE or FALSE (often represented as 1 or 0).

闪卡 2

问题

Define the term logic gate.

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答案

A logic gate is a visual way of representing a Boolean expression.

闪卡 3

问题

True or False? AND gates return TRUE only if both inputs are TRUE.

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答案

True. AND gates return TRUE only if both inputs are TRUE.

闪卡 4

问题

Describe the OR gate in Boolean logic?

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答案

OR returns TRUE if either input is TRUE.

闪卡 5

问题

State the meaning of NOT in Boolean logic.

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答案

NOT reverses the input value.

闪卡 6

问题

What is the function of XOR in Boolean logic?

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答案

XOR (exclusive OR) returns TRUE if either input is TRUE but NOT both.

闪卡 7

问题

What gate is this?

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答案

NAND returns TRUE if both inputs are NOT true.

闪卡 8

问题

What gate is this?

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答案

NOR returns TRUE if both inputs are FALSE.

闪卡 9

问题

True or False? OR gates return TRUE if both inputs are FALSE.

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答案

False. OR gates return FALSE if both inputs are FALSE.

闪卡 10

问题

What is the symbol used for AND gates?

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答案

闪卡 11

问题

What is a logic circuit?

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答案

A logic circuit performs logical operations on binary information.

闪卡 12

问题

True or False? In the exam, logic circuits can have unlimited inputs and outputs.

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答案

False. In the exam, logic circuits are limited to a maximum of three inputs and one output.

闪卡 13

问题

Define Boolean expression.

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答案

A statement that can be evaluated to either true or false.

闪卡 14

问题

What are brackets used for in Boolean expressions?

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答案

Brackets are used to clarify the order of operations in Boolean expressions.

闪卡 15

问题

True or False? In a logic diagram, inputs are typically represented by letters.

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答案

True. In a logic diagram, inputs are typically represented by letters.

闪卡 16

问题

Define logic diagram.

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答案

A logic diagram is a visual representation of combinations of Boolean operators within a logic circuit.

闪卡 17

问题

Draw the logic diagram for the Boolean expression P = (A AND B) OR C

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闪卡 18

问题

Draw the logic diagram for the Boolean expression P = (A XOR B) AND (NOT C)

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闪卡 19

问题

Draw the logic diagram for the Boolean expression P = NOT(C AND (A OR B))

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答案

闪卡 20

问题

Draw the logic diagram for the Boolean expression P = (A AND B) OR (NOT C)

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答案

闪卡 21

问题

What is a truth table?

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答案

A truth table is a tool used in logic and computer science to visualise the results of Boolean expressions.

闪卡 22

问题

True or False? Truth tables show only the inputs of a Boolean expression.

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答案

False. Truth tables represent all possible inputs and the associated outputs for a given Boolean expression.

闪卡 23

问题

How many rows are needed in a truth table with 3 inputs?

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答案

A truth table with 3 inputs needs 8 rows (2^3).

闪卡 24

问题

What is the output of an AND gate when both inputs are 1?

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答案

The output of an AND gate when both inputs are 1 is 1.

闪卡 25

问题

True or False? In a NOR gate, the output is 1 when both inputs are 0.

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答案

True. In a NOR gate, the output is 1 when both inputs are 0.

闪卡 26

问题

What is the output of an XOR gate when both inputs are 1?

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答案

The output of an XOR gate when both inputs are 1 is 0.

闪卡 27

问题

How do you determine the number of rows in a truth table?

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答案

The number of rows in a truth table is determined by 2^(number of inputs).

闪卡 28

问题

What are the missing inputs in the truth table?

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闪卡 29

问题

What is the output of a NOT gate when the input is 0?

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答案

The output of a NOT gate when the input is 0 is 1.

闪卡 30

问题

Draw a truth table for the Boolean expression P = (A AND B) AND NOT C

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闪卡 31

问题

What is a logic expression?

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答案

A logic expression is a way of expressing a logic gate or logic circuit as an equation.

闪卡 32

问题

True or False? In a logic expression, the output appears on the right of the equals sign.

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答案

False. In a logic expression, the output appears on the left of the equals sign.

闪卡 33

问题

State the logic expression for a NOT gate where A is the input and Z is the output.

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答案

Z = NOT A.

闪卡 34

问题

True or False. ((NOT A) OR B) NAND C = P is a valid logic expression.

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答案

False. The correct logic expression is P = ((NOT A) OR B) NAND C

闪卡 35

问题

True or False? The logic expression for an OR gate is Z = A NOR B.

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答案

False. The logic expression for an OR gate is Z = A OR B.

闪卡 36

问题

State the logic expression for this logic diagram.

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答案

P = (A XOR B) AND (NOT C)

闪卡 37

问题

State the logic expression for this logic diagram.

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答案

P = NOT((A OR B) AND C) OR P = NOT(C AND (A OR B))

闪卡 38

问题

True or False? Logic expressions can represent circuits with multiple gates.

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答案

True. Logic expressions can represent circuits with multiple gates.

闪卡 39

问题

State the logic expression for this logic diagram.

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答案

P = (A AND B) OR (NOT C)

闪卡 40

问题

How are complex logic circuits expressed as logic expressions?

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答案

Complex logic circuits are expressed as logic expressions by combining multiple operations using brackets to show the order of operations.