Digital refers to the binary representation of data as bits and bytes. The binary representation of data
 is basically the language computers use to create, manage, and store information, like a picture. 
This language that the computers use is called Binary Code. Binary code is made up of two things  
one named one as 0's and the other 1's. When data is transferred through a cable to a Computer  it
sends two different electronic pulses. One of these pulses is the 0 and the other is the 1.
 The binary representation of data is basically the language computers  uses to create, manage,   
and store information,  text ,data, music, pictures, movies etc.  Digital, related to digits or the 
 way they are represented. In computing, digital is virtually synonymous with binary because  the
computers familiar to most people process information coded as combinations of  binary digits bits).
One bit can represent at most two values; 2 bits, four values, 8 bits, 256 values, and so on.

     Values that fall between two numbers are represented as either the lower or the  higher of 
 the two. Because digital representation represents a value as a coded number, the range of  
values represented can be very wide, although the number of  possible values is limited  by  the 
number of bits used.
 When the data, pictures, music, movies are in digitized format and stored in various media
electronically  the possibility of degradation is practically eliminated over period of time.
 Digitizing information also makes it easier to preserve, access, and share.  For example, an 
 original historical document may only be accessible to people who visits its physical location, 
 but if the document content is digitized, it can be made available to people world over.