Complete the truth table for the following logic expression: X = (A XOR B) AND NOT C A B C Working space X

9618_s22_qp_12

THEORY

2022

Paper 1, Variant 2

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Write the logic expression for the following logic circuit. A B X C Complete the truth table for the following logic expression: X = (A NAND B) OR (A AND NOT C) A B C Working space X

9618_s22_qp_13

THEORY

2022

Paper 1, Variant 3

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Draw the logic circuit for this logic expression: T = (NOT A OR B) XOR (C NAND D) A T B C D Describe the function of the NAND and NOR logic gates. NAND NOR

9618_s23_qp_11

THEORY

2023

Paper 1, Variant 1

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Draw the logic circuit for this logic expression: Z = (R XOR S) AND (NOT T NOR P) R Z S T P Complete the truth table for this logic expression: Z = (NOT P OR Q) XOR (R NOR Q) P Q R Working space Z

9618_s23_qp_12

THEORY

2023

Paper 1, Variant 2

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A logic circuit is shown: A B C X Write the logic expression for the logic circuit. Complete the truth table for the given logic circuit. A B C Working space X Identify one logic gate not used in the given logic circuit. Draw the symbol for the logic gate and complete its truth table. Logic gate: ……………………………… Symbol: Truth table: A B Output

9618_w21_qp_11

THEORY

2021

Paper 1, Variant 1

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Complete the truth table for each of the following two logic gates. A B Output A B Output Draw a logic circuit for the following logic expression. X = NOT(NOT(A AND B)AND C) A B C X A B A B

9618_w21_qp_12

THEORY

2021

Paper 1, Variant 2

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A logic circuit is shown: A B C X Write the logic expression for the logic circuit. Complete the truth table for the given logic circuit. A B C Working space X Identify one logic gate not used in the given logic circuit. Draw the symbol for the logic gate and complete its truth table. Logic gate: ……………………………… Symbol: Truth table: A B Output

9618_w21_qp_13

THEORY

2021

Paper 1, Variant 3

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Draw a logic circuit for the logic expression: X = NOT ((NOT (A AND B)) OR (NOT (B AND C))) A B X C Complete the truth table for the logic expression: Y = (NOT P AND Q) OR (Q AND NOT R) P Q R Working space Y

9618_w22_qp_13

THEORY

2022

Paper 1, Variant 3

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A logic expression is given: S = (A AND B AND C) OR (B XOR C) Draw the logic circuit for the given expression. A B C S Complete the truth table for the logic expression: S = (A AND B AND C) OR (B XOR C) A B C Working space S

9618_s21_qp_12

THEORY

2021

Paper 1, Variant 2

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The diagram shows a logic circuit. A B C P Y Z R Q Complete the truth table for the given logic circuit. Show your working. Inputs Working space Outputs A B C P Q R Y Z State the name of the logic circuit. Write the Boolean expressions for the two outputs Y and Z in the truth table as sum-of-products and state the purpose of each output. Y = Purpose Z = Purpose

9618_s21_qp_31

THEORY

2021

Paper 3, Variant 1

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