From an article by Diffen:
Analog and digital signals are used to transmit information, usually through electric signals. In both these technologies, the information, such as any audio or video, is transformed into electric signals. The difference between analog and digital technologies is that in analog technology, information is translated into electric pulses of varying amplitude. In digital technology, translation of information is into binary format (zero or one) where each bit is representative of two distinct amplitudes.
| Analog | Digital | |
|---|---|---|
| Signal | Analog signal is a continuous signal which represents physical measurements. | Digital signals are discrete time signals generated by digital modulation. |
| Waves | Denoted by sine waves | Denoted by square waves |
| Representation | Uses continuous range of values to represent information | Uses discrete or discontinuous values to represent information |
| Example | Human voice in air, analog electronic devices. | Computers, CDs, DVDs, and other digital electronic devices. |
| Technology | Analog technology records waveforms as they are. | Samples analog waveforms into a limited set of numbers and records them. |
| Data transmissions | Subjected to deterioration by noise during transmission and write/read cycle. | Can be noise-immune without deterioration during transmission and write/read cycle. |
| Response to Noise | More likely to get affected reducing accuracy | Less affected since noise response are analog in nature |
| Flexibility | Analog hardware is not flexible. | Digital hardware is flexible in implementation. |
| Uses | Can be used in analog devices only. Best suited for audio and video transmission. | Best suited for Computing and digital electronics. |
| Applications | Thermometer | PCs, PDAs |
| Bandwidth | Analog signal processing can be done in real time and consumes less bandwidth. | There is no guarantee that digital signal processing can be done in real time and consumes more bandwidth to carry out the same information. |
| Memory | Stored in the form of wave signal | Stored in the form of binary bit |
| Power | Analog instrument draws large power | Digital instrument drawS only negligible power |
| Cost | Low cost and portable | Cost is high and not easily portable |
| Impedance | Low | High order of 100 megaohm |
| Errors | Analog instruments usually have a scale which is cramped at lower end and give considerable observational errors. | Digital instruments are free from observational errors like parallax and approximation errors. |
Wikipedia
ANOLOGY:
is a cognitive process of transferring information or meaning from a particular subject (the analogue or source) to another (the target), or a linguistic expression corresponding to such a process. In a narrower sense, analogy is an inference or an argument from one particular to another particular, as opposed to deduction, induction, and abduction, where at least one of the premises or the conclusion is general. The word analogy can also refer to the relation between the source and the target themselves, which is often, though not necessarily, a similarity, as in the biological notion of analogy.
are any media that are encoded in machine-readable formats.[1] Digital media can be created, viewed, distributed, modified and preserved on digital electronics devices.
Combined with the Internet and personal computing, digital media has caused disruption in publishing, journalism, entertainment, education, commerce and politics. Digital media has also posed new challenges to copyright and intellectual property laws, fostering an open content movement in which content creators voluntarily give up some or all of their legal rights to their work. The ubiquity of digital media and its effects on society suggest that we are at the start of a new era in industrial history, called the Information Age, perhaps leading to a paperless society in which all media are produced and consumed on computers.[2] However, challenges to a digital transition remain, including outdated copyright laws, censorship, the digital divide, and the spectre of a digital dark age, in which older media becomes inaccessible to new or upgraded information systems.[3] Digital media has a significant, wide-ranging and complex impact on society and culture.[2]
are media that use electronics or electromechanical audience to access the content. This is in contrast to static media (mainly print media), which today are most often created electronically, but do not require electronics to be accessed by the end user in the printed form. The primary electronic media sources familiar to the general public are video recordings, audio recordings, multimedia presentations, slide presentations, CD-ROM and onlinecontent. Most new media are in the form of digital media. However, electronic media may be in either analogue electronics data or digital electronic dataformat.
Although the term is usually associated with content recorded on a storage medium, recordings are not required for live broadcasting and online networking.
Any equipment used in the electronic communication process (e.g. television, radio, telephone, desktop computer, game console, handheld device) may also be considered electronic media.
DICTIONARY DEFINITIONS
TECHNOLOGY
DIGITAL ALONE
The effect of digital technology:
https://www.accenture.com/gb-en/insight-outlook-how-digital-technologies-are-changing-the-way-we-work
TECHNOLOGY
DIGITAL ALONE
The effect of digital technology:
https://www.accenture.com/gb-en/insight-outlook-how-digital-technologies-are-changing-the-way-we-work
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