A new device is helping computers provide great amounts of informatio
[00:27.35]The device is the compact disc or C
[00:43.02]It was invented several years ag
[00:57.50]to replace music records made of plasti
[01:13.67]A CD is played on a machine that uses laser lig
[01:32.58]to reproduce the musi
[01:42.27]It has become popular in the recording industr
[01:59.80]because it makes music sound so goo
[02:16.15]CDs are used with computer
[02:28.48]Computer experts have found that CDs can hold a great amount of informatio
[02:57.16]and publishers are beginning to produce educational materials
[03:19.50]using CD and computer technolog |