Analog vs Digital: Understanding Information Representation
このQ&Aのポイント
Learn about the difference between analog and digital information representation and how digitization works.
Discover how traditional representations are usually analog and how they can be converted to digital format.
Explore the concept of using atoms for analog information storage and bits for digital information storage.
翻訳お願いします。翻訳サイトのコピペはご遠慮ください。
翻訳お願いします。翻訳サイトのコピペはご遠慮ください。
We can represent information in either analog or digital form.
Traditional representations are usually analog.
For example, an invoice printed on a sheet of paper represents the information content of the invoice in analog (paper) form.
Similarly, we can use celluloid film to create an analog representation of the information content of a motion picture.
Digitization is the conversion of an analog representation to digital format using zeroes and ones, or bits.
For example, optically scanning an invoice creates a digital bitmap that has almost exactly the same information content as the printed original(excepting quantization errors).
Similarly , scanning each frame of a motion picture results in a digital representation of the information content of the film.
Another way to view this dichotomy is to say that information stored in analog form uses atoms, but information stored in digital form uses bits [Negroponte 95].
