Understanding Digital and Analog Signals

What are digital signals?

• Signals made of only two digits, 1s and 0s

• Signals made of multiple digits

• Signals that cannot be stored

• Signals that are not electronic.

Digital signals are used by computers to ______.

• send and store information

• create sound waves

• amplify vibrations

• record on vinyl

The sound wave produced by a record player is ______ to the original sound wave.

• analogous

• digital

• different

• static

The pitch of sound in an analog signal can take on ______.

• A) a wide range of values

• B) only two values

• C) no values

• D) static values.

What allows computers to function using digital signals?

• Processing information

• Creating sound waves

• Amplifying vibrations

• Recording on vinyl

Fill in the blank: The most basic instructions controlling a computer are made up of a series of ___ and ___.

• 1s and 0s

• As and Bs

• Xs and Ys

• 2s and 3s

Why do computers need to convert analog signals to digital signals?

• To save space

• To handle digital thermometer readings

• To make them colorful

• To increase speed.

What allows us to download, play, and stream music from our smartphones?

• A) Analog signals

• B) Digital signals

• C) Radio waves

• D) Light waves

Why do you start to hear static as you get too far from a radio station?

• Because of digital signals

• Because of analog signal deterioration

• Because of light interference

• Because of water waves.

Which devices rely on digital signal transmission?

• Satellite TV

• Analog radios

• Old telephones

• Typewriters