CD

CD

1. Compact Disc. CDs typically contain audio (Audio-CD), video (Video-CD) or data (CD-ROM).

Audio CDs contain audio sampled at 16-bit, 44.1kHz and provides 74 or 80 minutes of two-channel (stereo) audio.

CD-ROMs can store up to 650MB of data.

For more information see:

• http://everything.explained.at/Compact_Disc - Compact Disc Explained.
• http://everything.explained.at/CD-ROM - CD-ROM explained.

2. Change Directory. The cd command is a command-line command to change the current directory. It is available on a number of operating systems (including Windows and Unix/Linux.) The 'cd' command is normally expressed in lower case.

3. Abbreviation for candela, the SI unit for the luminous intensity of light.