Modern Communication with Digital Signals

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Analog Signal Noun

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[an-uh-log sig-nuhl]

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Analog Signal

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A signal that changes continuously over time and can represent any value within a specific range.

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Example: The image shows an analog signal as a continuous wave, illustrating how it changes smoothly over time.

Front

Digital Signal Noun

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[dij-i-tuhl sig-nuhl]

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Digital Signal

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An electric signal that represents information by changing between two distinct values, typically on (1) and off (0).

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Example: A waveform showing how digital signals switch between 0V and +5V to represent binary data.

Front

Continuous Signal Noun

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[kuhn-tin-yoo-uhs sig-nuhl]

Back

Continuous Signal

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A signal that changes smoothly and without any interruptions or breaks over a period of time.

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Example: A continuous wave showing smooth changes in amplitude and wavelength over time.

Front

Discrete Values Noun

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[dih-skreet val-yooz]

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Discrete Values

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Information represented by specific, separate amounts or steps rather than a continuous range of values.

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Example: A bar graph showing the number of children preferring different ice cream flavors illustrates discrete values.

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Translate Verb

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[trans-leyt]

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Translate

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The process by which a device interprets a signal and converts it into another understandable form.

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Example: A phone screen translating text shows how devices convert signals into understandable forms.

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Encode Verb

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[en-kohd]

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Encode

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To convert information into a specific code, such as binary numbers, for transmission or storage.

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Example: Data is encoded into binary numbers for transmission from a sender to a receiver.

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Noise Noun

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[noiz]

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Noise

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An unavoidable modification or interference that is added to a signal, which can alter the original information.

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Example: Sound waves from two speakers interfere, demonstrating noise in signal transmission.

Front

Degradation Noun

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[deg-ruh-dey-shuhn]

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Degradation

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The deterioration or loss of quality in the information contained in a signal, often caused by noise.

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Example: A signal weakens as it travels from the transmitter to the receiver, showing degradation.

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Filtering Noun

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[fil-ter-ing]

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Filtering

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The process of removing unwanted noise from a signal to improve the clarity of the original information.

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Example: The image shows how filtering removes unwanted particles from a fluid, similar to removing noise from a signal.

Front

Binary Numbers Noun

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[bahy-nuh-ree nuhm-berz]

Back

Binary Numbers

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A number system using only two digits, 0 and 1, to represent the 'off' and 'on' states of an electrical signal.

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Example: Light bulbs illustrate binary numbers with 'on' and 'off' states, showing how 0s and 1s represent digital signals.