Definition of Digital

 

       When speaking of an object or service as digital, you are referring to the same set from dispatch batch or discrete data. In general, the term digital (used as an adjective) are the technological and electronic environments, since it is one of the latest developments in regard to image quality, sound, effects, …

We can start by saying that the word digital comes from the Latin word digitus, which means finger. In this sense, it is important to understand that digital is all that can be counted on the fingers as the number of elements or values than have been much more limited than what happens with the analog data. This makes the values that make up a signal, a service or a digital image type are much lower than those of the signal or analog service, therefore, being less may be better recorded and measured. This will then make the digital signal is much more reliable and better quality than analogue because it has fewer elements to be transmitted.

The digital word is applied today to many appliances and electronic instruments that offer, then this service enhanced image. Many types of images are processed digitally in this way and to be observed by the naked eye become much more vivid and almost tangible that what happens with normal images. The TV has digital images or high definition is just one type of television is much sharper, vivid and highly more vibrant colors, thus allowing the experience certainly become more intense.

For a digital system to function properly, it must first pass through the phase of data synchronization schemes which are organized data which will then be transmitted. In this way, you can add an interesting fact: any system that has a data synchronization system whose sequence is orderly and measurable in terms of the elements that compose it, can be considered digital. Here then fall examples such as the alphabet (which has a limited number of characters), Morse code or Braille, DNA, an abacus and a few others.

source   :    http://www.techiesouls.com/2010/05/30/definition-of-digital/