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Learn: What a Logic Gate Does
OCR GCSE J277 Computer Science specification
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Welcome!Welcome to today's lesson about logic gates. We'll explore how they work and why they are important in computing. Let's get started!
What is a Logic Gate?A logic gate is a building block of digital circuits. It takes one or more inputs and produces a single output based on a rule. Logic gates allow computers to make decisions based on conditions.
The AND GateThe AND gate outputs 1 only when all inputs are 1. If any input is 0, the output will be 0. For example, if both switches are ON, the light will turn ON.
What is the output of an AND gate with inputs 1 and 0?
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The OR GateThe OR gate outputs 1 if any input is 1. It only outputs 0 when all inputs are 0. For example, if either switch is ON, the light will turn ON.
What is the output of an OR gate with inputs 0 and 1?
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The NOT GateThe NOT gate outputs the inverse of its input. If the input is 1, the output will be 0, and if the input is 0, the output will be 1. It is often used to toggle or invert signals.
The NOT gate outputs {{blank0}} when the input is 1.
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Match the items on the left with their correct pairs on the right
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Combining Logic GatesLogic gates can be combined to create more complex circuits. For example, an AND gate and a NOT gate together can create a circuit that outputs 0 unless both inputs are 1.
Which statement is true about logic gates?
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Review Time!Great work! You've learned about AND, OR, and NOT gates. Let's review everything with a few questions.
Which of these statements are true? (Select all that apply)
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Match the items on the left with their correct pairs on the right
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An AND gate outputs 1 only when {{blank0}} inputs are 1.
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