Question

question 15 of 28
which characteristic makes a digital signal more useful than an analog signal for storing information?
a. a digital signal includes a spectrum of colors.
b. a digital signal cannot be heard by humans.
c. a digital signal moves between a discrete number of values.
d. a digital signal is more difficult to copy.

Explanation:

Digital signals are represented by discrete values (usually binary - 0 and 1). This discrete nature makes them easier to store, process, and transmit accurately compared to analog signals which have a continuous range of values. Option A is incorrect as color spectrum is not relevant to the signal type for storage. Option B is wrong because digital signals can be converted to audible forms (e.g., digital music files played as sound). Option D is incorrect as digital signals are often easier to copy precisely (e.g., copying a digital file).

Answer:

C. A digital signal moves between a discrete number of values.