CET 2025 Slot 3 · Verbal – Page 11

Compact Discs (CDs) have revolutionized the music industry with their surprisingly realistic sound. The six-inch discs look like plastic sandwiches with aluminum at the centre. They have digitally recorded material that is read by laser beams, so the sound has none of the crackling of vinyl records. CDs are also virtually indestructible, and they are lighter and smaller than conventional records. Since their introduction, CDs have become more affordable and widely available. In fact, they are now sold in electronics and video stores that didn’t formerly carry records or cassettes.

There has been a phenomenal growth in the sale of CDs. Sales climbed dramatically during the second half of the 1980s. In the 1990s, sales have been greater. CDs have all but replaced records in stores and, in spite of their being less affordable than cassettes, continue to gain in popularity.