Chapter 3 Analog and Digital Signals

Question 1

Analog is usually represented
as a continuous, varying wave. In fact, the term analog is used because the analog wave
is analogous to fluctuations of the ____.

Answer 1

Analog is usually represented
as a continuous, varying wave. In fact, the term analog is used because the analog wave
is analogous to fluctuations of the voice.

Question 2

Analog waves are
continuous, and
digital waves are __or ___.

Answer 2

Analog waves are
continuous, and
digital waves are
on or off.

Question 3

What are the two characteristics of an analog waveform?

Answer 3

The first characteristic is
the smooth, constantly flowing line.
The second characteristic is the constantly changing
amplitude over time.

Question 4

How is a digital waveform described?

Answer 4

, a digital waveform is a sudden signal with voltage (on)

followed by no voltage at all (off).