Логика и таблицы истинности

What are logic gates?

• Logic gates are devices that perform logical operations in digital circuits.

• Logic gates are mechanical devices for controlling movement.

• Logic gates are devices for storing data.

• Logic gates are components for powering circuits.

What are the main logical operations?

• Multiplication

• AND, OR, NOT, XOR, NOR

• Subtraction

• Addition

What does the AND operation mean in logic?

• Logical multiplication, the result is true only when both operands are true.

• An operation that always returns false.

• Logical addition, the result is true when at least one operand is true.

• An operation that compares two numbers and returns their sum.

What is the truth table for the OR operation?

• A OR B: (false, false) -> true; (false, true) -> true; (true, false) -> true; (true, true) -> false.

• A OR B: (false, false) -> false; (false, true) -> true; (true, false) -> true; (true, true) -> true.

• A OR B: (false, false) -> false; (false, true) -> true; (true, false) -> false; (true, true) -> true.

• A OR B: (false, false) -> true; (false, true) -> false; (true, false) -> false; (true, true) -> false.

Что делает логическая операция NOT?

• Инвертирует логическое значение.

• Увеличивает логическое значение.

• Сравнивает два логических значения.

• Удаляет логическое значение.

Какова таблица истинности для NAND?

• | A | B | A NAND B | |---|---|----------| | 0 | 0 | 1 | | 0 | 1 | 1 | | 1 | 0 | 0 | | 1 | 1 | 1 |

• | A | B | A NAND B | |---|---|----------| | 0 | 0 | 1 | | 0 | 1 | 1 | | 1 | 0 | 1 | | 1 | 1 | 0 |

• | A | B | A NAND B | |---|---|----------| | 0 | 0 | 0 | | 0 | 1 | 0 | | 1 | 0 | 0 | | 1 | 1 | 1 |

• | A | B | A NAND B | |---|---|----------| | 0 | 0 | 1 | | 0 | 1 | 0 | | 1 | 0 | 0 | | 1 | 1 | 1 |

What is the logical operation NOR?

• The logical operation NOR returns true if at least one operand is true.

• The logical operation NOR always returns true.

• The logical operation NOR is an operation that returns false only if both operands are true.

• The logical operation NOR is an operation that returns true only if both operands are false.

What is the truth table for XOR?

• 1 1 | 1

• 0 0 | 1

• A B | A XOR B 0 0 | 0 0 1 | 1 1 0 | 1 1 1 | 0

• 0 1 | 0

How can logic gates be connected in a chain?

• Logic gates cannot be connected in a chain.

• Logic gates can only be connected in parallel.

• Logic gates are connected by linking the output of one gate to the input of another.

• Logic gates operate independently of each other.

Why are logical operations important for the functioning of computers?

• Logical operations are necessary for data processing and performing calculations in computers.

• Logical operations are only necessary for working with graphics.

• Logical operations are used only for games.

• Logical operations do not affect the performance of the computer.