Understanding Analog and Digital Signals

A Digital Signal is:

• a continuous signal that varies over time

• a discrete signal that has specific values at specific times

• a signal that can only be used in analog devices

• a type of noise in communication systems

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NGSS.HS-PS4-2

An Analog Signal is:

• a continuous signal that varies over time

• a discrete signal with distinct levels

• a digital representation of data

• a type of noise in communication

Tags

NGSS.HS-PS4-5

What type of signals are continuous and vary with time?

• A) Digital Signals

• B) Analog Signals

• C) Binary Signals

What type of signals are sent as wave pulses representing zeros and ones?

• A) Digital Signals

• B) Analog Signals

• C) Radio Signals

Tags

NGSS.HS-PS4-2

NGSS.HS-PS4-5

Fill in the blank: Digital signals carry ______ information per second than analog signals.

• more

• less

• equal

• no

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NGSS.HS-PS4-2

What are some advantages of digital signals?

• They are less susceptible to noise and interference.

• They require more bandwidth than analog signals.

• They are more difficult to encrypt.

• They have a continuous range of values.

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NGSS.HS-PS4-2

What is an example of an analog signal?

• A) Digital clock

• B) AM/FM Radio

• C) Binary code

• D) LED display

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NGSS.MS-PS4-3

Fill in the blank: Analog signals are continuous ______ that vary with time.

• signals

• waves

• frequencies

• currents

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NGSS.HS-PS4-1

What does FM stand for?

• Frequency Modulation

• Fast Mode

• File Manager

• First Move

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NGSS.HS-PS4-1

Digital signals are sent as wave pulses representing zeros and ones. What is this code called?

• Binary Code

• Morse Code

• ASCII Code

• Hexadecimal Code

Tags

NGSS.MS-PS4-3