COMPUTER FUNDAMENTALS

Detailed explanation-1: -CD-ROM stands for Compact Disc Read-Only Memory. It functions as a CD that stores computer data of graphics, text and audio. They are popular for software and other multimedia applications. CD-ROMs commonly store up to 700MB of information.

Detailed explanation-2: -A standard compact disc measures 4.7 inches, or 120 millimeters (mm), across, is 1.2 mm thick, weighs between 15 grams and 20 grams, and has a capacity of 80 minutes of audio, or 650 megabytes (MB) to 700 MB of data.

Detailed explanation-3: -A standard 120 mm, 700 MB CD-ROM can actually hold about 703 MB of data with error correction (or 847 MB total). In comparison, a single-layer DVD-ROM can hold 4.7 GB (4.7 × 109 bytes) of error-protected data, more than 6 CD-ROMs.

Detailed explanation-4: -Standard CDs are available in two sizes. By far the most common is 120 mm in diameter, with a 74 or 80-minute audio capacity and a 650 or 700 MB data capacity. 80 mm discs (” Mini CDs") were originally designed for CD singles and can hold up to 21 minutes of music or 184 MB of data.

Detailed explanation-5: -Their main reason for doing this was to allow the continued production of 700 MB disk for the already existing base of CD players. The next time they upgraded the storage on the CD (or DVD) it became the BlueRay disk. So there are “CD-ROM” disk that hold more than 700 MB.