Definition of Analog:

  1. Computing: Representation of data by a physically measurable quantity that is proportional to the data being represented. An analog computer converts data into a corresponding voltage for data processing, storage, and transfer. For example, a temperature reading (say, 30°C) may be represented by an electric current of 2.5 volts, and twice as high reading (60°C) by 5.0 volts.

  2. Relating to or using signals or information represented by a continuously variable physical quantity such as spatial position, voltage, etc.

  3. Communications: One of only two methods (the other is digital) of converting data into electrical signals. Analog signals are continuous waves and correspond in magnitude (more or less, high or low) to the quantities they represent. For example, an analog mobile phone converts sound waves into identical electrical waves which are reconverted into sound at the receiving end. Being identical (analogous) to electrical signals generated in nature, analog signals are highly susceptible to interference from natural phenomenon (such as weather and sun spots) that cause signal distortion, loss, and noise. Analog signals degrade with distance and repeated duplication but, for the same amount of data, require less bandwidth for transmission than the digital signals.

  4. A person or thing seen as comparable to another.

  5. Information Science: (1) Phenomenon that varies infinitely over a range. For example, during the early part of a day sunshine gradually increases in brightness in a smooth flow and then decreases in the same manner in the later part. At any given moment, the sunshine is either more or less bright than the preceding and succeeding moments. In contrast, a room lit by an electric bulb is either dark or lighted at any given moment, depending on whether the current is switched on or off. Similarly, the colors and shades in a film-photograph or a painting merge smoothly into neighboring colors and shades, whereas a digital photograph (or a scanned painting) consists of tiny dots each of which is distinct and separate from its neighbor. (2) Correspondence or resemblance of the copy (facsimile or representation) of an item with the item itself. A chart or graph, diagram, photocopy, photograph, picture, or scale model looks like (is analogous to) the movement of prices, layout of a building, the original document, face of a person, the shape of a machine the thing it represents. Similarly, analog devices reflect (in one way or the other) the quantities they measure: a mercury thermometer shows a column of mercury that is proportional to the temperature it reads; the second hand continuously sweeps the face of a watch and represents the unbroken flow of time, the needle of a cars fuel gauge indicates amount of gas in the tank by pointing to a corresponding level on a scale. In summary, analog information is (a) continuous, (b) measured, and (c) precise (as opposed to accurate).

Synonyms of Analog

Counterpart, Analogue, Equivalent, Likeness, Correspondent, Match, Twin, Duplicate, Equal, Coequal, Mirror

How to use Analog in a sentence?

  1. An interior analogue of the exterior world.
  2. Although it was expected to be a difficult transition, the cable company was anxious to switch from an analog system to their all-new, all-digital format.
  3. I could not believe that he still wore an analog watch when everywhere you looked was nothing but digital timepieces.
  4. Analog signals.
  5. As the student saw the sky grow darker and darker with the passing of time and the dropping of the sun he finally understood the concept of analog .

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