Middle School Physical Science Flashcards: Why Digital Is Clearer

Study Why Digital Is Clearer in Middle School Physical Science with focused flashcards that help you recognize the idea, recall the key rule, and apply it in practice-style prompts.

QUESTION

What device repeats and regenerates a digital signal to reduce accumulated noise over distance?

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ANSWER

A digital repeater (regenerator). It cleans and retransmits signals, preventing noise accumulation.

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This deck focuses on Why Digital Is Clearer, giving you a quick way to review the definitions, rules, and examples that matter most for Middle School Physical Science.

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Work through these flashcards in short sessions. Try to answer each prompt before flipping the card, then revisit any cards you miss until the explanation feels automatic.

Practice questions

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A long cable run adds a little noise every few kilometers. An analog signal is amplified along the way, but the amplifiers boost the noise and the signal together. A digital signal is sent as 0s and 1s and is "regenerated" at repeaters: the repeater decides whether each bit is 0 or 1 using a threshold and then sends out a clean 0 or 1 again. What is the main reason the digital signal stays clearer over long distances?

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