Which of these is an advantage of digital storage of information over analog?
A. A copy of an analog file is never as good as it's original
B. Analog signals take up less bandwidth or storage space than digital
C. Analog storage of information is continuous and captures more pure sound
D. Sound can be recorded either digitally or using analog techniques
D. Sound can be recorded either digitally or using analog techniques
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The correct answer is B. Analog signals take up less bandwidth or storage space than digital.
The advantage of digital storage of information over analog is option B. Analog signals take up less bandwidth or storage space than digital.
To understand why this is the case, we need to understand the fundamental differences between analog and digital storage. Analog storage refers to a continuous representation of data, such as a physical sound wave on a vinyl record or magnetic tape. On the other hand, digital storage represents data as discrete values using binary code (0s and 1s).
Analog signals are continuous and can capture a higher frequency range, which is why some argue that analog storage captures more pure sound (option C). However, digital storage compensates for this limitation by sampling the analog signal at a sufficiently high rate, capturing the necessary information to reconstruct the sound accurately.
Now, let's consider why option A is not an advantage of digital storage. When an analog file is copied, there is a possibility of loss in quality due to degradation or noise introduced during the copying process. On the other hand, digital files can be duplicated with no loss in quality as long as the copying is done accurately. Therefore, option A is not an advantage of digital storage.
Regarding option D, both digital and analog techniques can be used to record sound, but it doesn't directly address the advantage of digital storage. It simply highlights that there are multiple methods available for recording sound.
To summarize, option B is the correct answer because digital storage requires more storage space or bandwidth compared to analog storage.