On March 8, 1979, "Philips" Company "IEEE" organization (the Institute of Electrical and Electronics Engineers - Institute of Electrical and Electronics Engineering) demonstrated the first prototype of a compact disc. Laser disc technology used in the preparation of the company. Thus, the information you read through the laser.
 

A few days later, a new and more reliable method for storing information on the work of the "Sony" the company said in a statement prepared on compact disc.

First, because it is very far from perfect prototypes submitted a compact disc, Sony and Philips companies have joined forces. Compact disc developed by the two companies was 12 centimeters in diameter, and it was possible to write data to a disc capacity of 650 megabytes.

"Presently," according to the news service, carrier companies have introduced in March 1983. "CD" players is the first time the discs are more expensive than the price was lower sales volume. However, by 1988, the compact disc has sold more than 400 million worldwide.

"IEEE" According to the data of "CD" was the first mass digital products. Since the early 2000s, the development of the Internet and the "mp3" as a result of the creation of the so-called digital format such carriers began to decline in popularity.