What is a Compact Disc?
Q: What is a Compact Disc?
A: A Compact Disc, also called a CD, is a small plastic disc used to store and retrieve computer data or music using light.
Q: Why were Compact Discs invented?
A: Compact Discs were invented because they were faster and could hold more information than floppy disks. They replaced floppy disks and made them obsolete.
Q: Who invented Compact Discs?
A: Compact Discs were invented by both Philips and Sony at the same time, but not together.
Q: When did Sony and Philips work together to create a standard format and technology to read CDs?
A: Sony and Philips worked together to create a standard format and technology to read CDs in 1982.
Q: How much data can a CD hold?
A: A CD can hold up to 700 MB worth of data, which is about 80 minutes of music.
Q: What are Mini CDs used for?
A: Mini CDs were made for special small programs like drivers.
Q: What is the diameter of a normal CD?
A: The diameter of a normal CD is 120 mm. The middle hole in a CD is about 1.5 cm.
