Analog and Digital Signals

Analog encoding sends or stores information using quantities that

• can vary continuously.

• can only have specific values.

• are separated by consistent numbers.

• store waves’ crest and trough sizes in small steps.

Digital encoding sends or stores information using quantities that

• can vary continuously.

• can only have specific values.

• have no numeric gaps between one another.

• create smooth curves inside a sound wave.

AM and FM radio stations

• switch between analog and digital signals to broadcast sound waves.

• transmit sound using multiple frequency ranges, including radio waves, visible light, and ultraviolet light.

• change the amplitude or frequency of waves to encode sounds.

• convert broadcasts into binary code.

This signal is a continuous signal

• Analog

• Digital

This signal is an electric signal that changes between two values (binary)

• Analog

• Digital

The image provided is a _________ signal.

• Analog

• Digital

The image provided is a _________ signal.

• Analog

• Digital

A cassette tape

• Analog

• Digital

Used in cell phones

• Analog

• Digital

An MP3

• Analog

• Digital