Savvas Topic 7: Information Technologies

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What is an analog signal?

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An analog signal is a continuous signal that represents physical measurements. It can take any value within a given range, allowing for high resolution and detail.

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What is a digital signal?

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A digital signal is a discrete signal that represents data as binary numbers (0s and 1s). It is less prone to noise and can be easily stored and processed.

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What is fiber optics?

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Fiber optics is a technology that uses thin strands of glass or plastic to transmit data as light signals over long distances.

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What is the main advantage of digital signals over analog signals?

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Digital signals are less susceptible to noise and interference, making them more reliable for data transmission.

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What is software?

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Software refers to programs and applications that instruct a computer on how to perform specific tasks, including encoding, decoding, and interpreting information.

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What is a bit?

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A bit is the smallest unit of data in computing, representing a single binary value of either 0 or 1.

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What is a byte?

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A byte is a group of 8 bits, which can represent 256 different values (from 0 to 255).

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What does a doorbell signal indicate?

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A doorbell signals that someone is at the door, alerting the homeowner to a visitor.

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What is the purpose of GPS technology?

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GPS (Global Positioning System) is used for determining the precise location of a device anywhere on Earth using satellite signals.

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What is WiFi?

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WiFi is a technology that allows electronic devices to connect to a wireless local area network (WLAN) to access the internet.