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LETTER: Digital and analog differences worth exploring

Two interesting articles were presented in this newspaper several weeks ago about the apparent shift toward analog technology. While this show of nostalgia is refreshing to see, equally so is the upholding and respect shown for early inventors like Edison, Flemming, and others. Their experimentation in electricity and related inventions was “high technology” relative to the time. One can appreciate the path they provided enabling later generations to continue with innovations in their field.

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For the purpose of this article, it is well to explain the difference between analog and digital. Analog electronics is a system that represents information using continuously variable quantities such as electrical voltages and sound waves. For example, in an audio system microphones or instruments send analog signals to an amplifier which amplifies the signals to a speaker. All the way through the system the signal is preserved as an analog quantity.

Digital, on the other hand, uses discrete numbers to represent information. The numbers used are called binary numbers, based on a number system consisting of only two digits, zero and one. Binary is simpler to use in electronic circuits........

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