Digital vs Analog in Arduino

What defines a continuous signal?

• Specified only at discrete time values.

• Specified for every infinitesimal value of time.

• Amplitude can only take on a finite number of values.

• Signal has no value in certain areas.

What defines a discrete signal?

• Specified for every infinitesimal value of time.

• Amplitude can take on any value in a continuous range.

• Specified only at discrete time values, with no value between them.

• Always represents a physical phenomenon directly.

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Which of the following is an example of an analog quantity?

• A computer's internal data.

• The on/off state of a light switch.

• The temperature outside.

• A Morse code signal.

Which statement accurately describes an analog signal?

• Its amplitude can only take on a finite number of values.

• It is immune to noise and static.

• Its voltage or current varies continuously over time.

• It is specified only at discrete time values.

What is a key characteristic of a digital signal?

• It varies continuously over time.

• It can take on an infinite number of values.

• It is defined by a finite number of discrete states, such as on or off.

• It is always a direct copy of a physical phenomenon.