Although digital representations are discrete, the information represented can be either discrete, such as numbers or letters, or continuous, such as sounds, images, and other measurements of continuous systems.
Digital information has certain properties that distinguish it from analog communication methods. These include. Many devices come with built in translation facilities from analog to digital. Microphones and speaker are perfect examples of analog devices. Analog technology is cheaper but there is a limitation of size of data that can be transmitted at a given time. Digital technology has revolutionized the way most of the equipments work. Data is converted into binary code and then reassembled back into original form at reception point.
Since these can be easily manipulated, it offers a wider range of options. Digital equipment is more expensive than analog equipment. Digital devices translate and reassemble data and in the process are more prone to loss of quality as compared to analog devices. Computer advancement has enabled use of error detection and error correction techniques to remove disturbances artificially from digital signals and improve quality.
Digital technology has been most efficient in cellular phone industry. Analog phones have become redundant even though sound clarity and quality was good. Analog technology comprises of natural signals like human speech. With digital technology this human speech can be saved and stored in a computer.
Thus digital technology opens up the horizon for endless possible uses. Share this comparison:. If you read this far, you should follow us:. Diffen LLC, n. Analogy signal is a continuous signals which represents physical measurements Analog vs.
All kinds of measuring devices operated in a similar way, from speedometers and weighing machines to sound-level meters and seismographs. For example, an old-style film camera is sometimes referred to as analog technology.
Basically, the picture is an analog of the recorded scene. Digital technology is entirely different from analog technology. Instead of storing words, pictures, and sounds as representations on materials such as magnetic tape or plastic film, the information is first converted into numbers digits that are displayed or stored.
These days, most devices work using digital rather than analog technology. Because it can be used in such a way, digital technology has many advantages.
Digital information is also typically more secure. Smartphone conversations are encrypted before transmission, which is easy to do when information is in numeric form from the start. Another advantage is that users can edit and play with digital information without any hassle. An analog watch might be much more accurate than a digital one if it uses a high-precision movement to measure passing time. But will information stored in digital form last as long as analog information?
Got your learning hats on? When people use the terms analog or digital, they are talking about them in terms of signals. On the one hand, analog technology uses electrical pulses of varying amplitudes, where in digital technology, information is translated into a binary format — either zeros or ones, which is used to represent one of the two different amplitudes.
In an analog recording, the signal is taken right from the microphone and recorded on to tape, perfectly capturing the analog wave from the mic and keeping it an analog wave on the tape. For a digital recording, that analog wave is sampled and turned into numbers that are then stored digitally.
During playback, the numbers are turned into a voltage wave, that does its best to try to approximate the original wave.
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