FUNDAMENTALS OF COMPUTER

Detailed explanation-1: -The compact disc (CD) is a digital optical disc data storage format that was co-developed by Philips and Sony to store and play digital audio recordings.

Detailed explanation-2: -CD data is stored as a series of tiny indentations (pits), encoded in a tightly packed spiral track of pits moulded into the top of the polycarbonate layer. The areas between pits are known as ‘lands’. Each pit is approximately 100 nm deep by 500 nm wide, and varies from 850 nm to 3.5 m of length.

Detailed explanation-3: -The CDA format is an industry standard (referred to as the Red Book audio standard) that is used for encoding music on CDs and audio CDs bought in the high street will use this format.

Detailed explanation-4: -CDs store information digitally, i.e., with the help of millions of 1s and 0s. Data on a CD is encoded with the help of a laser beam that etches tiny indentations (or bumps, if you will) on its surface. A bump, in CD terminology, is known as a pit and represents the number 0.

Detailed explanation-5: -Optical data storage is a method of storing digital information (1’s and 0’s) by using light to read the information. Analog information is converted into digital information, which is then encoded onto the disc from the inside edge out. Digital data are encoded by means of pits on the recording layer of the disc.