Wave Applications Review

Both analog and digital signals are a copy/representation of something.

• True
• False

What is an example of an analog signal?

• Hands on a clock
• High speed internet
• Fiber optics
• Cable TV

Which is a possible ADVANTAGE of ANALOG?

• It is easier to edit and view
• There is subjectivity (more guesswork) in taking readings or measurements
• Information is easier to store, takes up less room, and is more secure
• It may be more accurate

What is an example of a digital signal?

• A mercury thermometer reading
• Human voice
• A painting
• Cell phone text message

Which of the following is NOT a characteristic of DIGITAL signals?

• Uses computers for easier interpretation
• Easy to reproduce without error (or error that is easily corrected)
• Is transmitted more quickly
• Is converted into code
• Does not travel well over great distances

Analog signals can be converted into digital signals by the process of

• Sampling
• Decoding
• Interference
• Copying

Joe and Sam are sampling data, Joe is sampling every 5 milliseconds, Sam is sampling every 10 milliseconds. Who will have a better-quality copy?

• Sam
• Joe
• Impossible to tell
• They will be of the same quality

Label the components of sending a signal

a

b

c

d

e

f

g

h

Encoder

Decoder

Transmitter

Digital Signal

Destination

Source

Analog Signal

Receiver

Identify the digital signals

Identify the Transmitters