Compact Discs
Compact discs (CDs) also contain factory codes inscribed near the hub, and these are also called matrix numbers.
Read more about this topic: Matrix Numbers
Famous quotes containing the word compact:
“... in a history of spiritual rupture, a social compact built on fantasy and collective secrets, poetry becomes more necessary than ever: it keeps the underground aquifers flowing; it is the liquid voice that can wear through stone.”
—Adrienne Rich (b. 1929)