compact discs

CD

Abbreviation for compact disc

rewriteable

Also known as erasable optical discs. Similar to CD-Rs except that the disc surface is not permanently altered when data is recorded.

compact disc

Better known as CD was the first widely available optical format for PC users

optical disc drive

Optical discs are read by an ___________

read only

Read only means it cannot be written or erased by the user.

CD-R

Stands for CD-recordable

CD-RW

Stands for compact disc rewriteable

CD-ROM

Stands for compact disc- read- only memory

lands

The 1s and 0s are represented by flat areas called______

optical disc drive

an ______________ uses a laser that projects a tiny beam on pits. The amount of reflected light determines whether the area represents a 1 or 0.

pits

bumpy areas on the disc surface

write once

can be written only once. After it can be read many times but cannot be written or erased

optical disc

can hold over 128 gigabytes of data. Very common

three basic types of CDs

read only, write once, and rewriteable