Understanding Logic Gates and Truth Tables

What is a logic gate?

• A logic gate is a device that converts analog signals to digital signals.

• A logic gate is an electronic device that performs a basic operation on one or more binary inputs to produce a single binary output.

• A logic gate is a type of software used for programming.

• A logic gate is a physical structure that stores data permanently.

Name the basic types of logic gates.

• TRUE, FALSE, MAYBE

• ADD, SUBTRACT, MULTIPLY

• AND, OR, NOT, NAND, NOR, XOR, XNOR

• INPUT, OUTPUT, PROCESS

What is the output of an AND gate if both inputs are true?

• false

• true

• null

• undefined

What is the output of an OR gate if one input is false?

• true

• undefined

• false

• error

Define a NOT gate and its function.

• A NOT gate amplifies the input signal.

• A NOT gate outputs the same signal as the input.

• A NOT gate is used to combine multiple signals.

• A NOT gate is a digital logic gate that inverts the input signal.

How many inputs can a NAND gate have?

• A NAND gate cannot have more than four inputs.

• A NAND gate can have two or more inputs.

• A NAND gate can only have one input.

• A NAND gate can have a maximum of three inputs.

What is the truth table for a NOR gate?

• | A | B | Output | |---|---|--------| | 0 | 0 | 1 | | 0 | 1 | 0 | | 1 | 0 | 0 | | 1 | 1 | 0 |

• | A | B | Output | |---|---|--------| | 0 | 0 | 1 | | 0 | 1 | 1 | | 1 | 0 | 0 | | 1 | 1 | 1 |

• | A | B | Output | |---|---|--------| | 0 | 0 | 0 | | 0 | 1 | 0 | | 1 | 0 | 1 | | 1 | 1 | 0 |

• | A | B | Output | |---|---|--------| | 0 | 0 | 0 | | 0 | 1 | 1 | | 1 | 0 | 1 | | 1 | 1 | 1 |

Explain the difference between an AND gate and an OR gate.

• An AND gate can have multiple true outputs; an OR gate can only have one true output.

• An AND gate requires at least one input to be true for a true output; an OR gate requires all inputs to be true.

• An AND gate outputs true if any input is true; an OR gate outputs true if all inputs are true.

• An AND gate requires all inputs to be true for a true output; an OR gate requires at least one input to be true for a true output.

What is the output of a XOR gate when both inputs are the same?

• 1

• 2

• 0

• true

How can you represent a logic gate using a truth table?

• A truth table is used to calculate the area of a logic gate.

• A truth table is a graphical representation of a logic gate.

• A truth table shows input combinations and their outputs for a logic gate.

• A truth table only shows the output for a single input.