Question

the data storage of CD between ​

Answer 1

A standard 120 mm, 700 MB CD-ROM can actually hold about 737 MB (703 MiB) of data with error correction (or 847 MB total). In comparison, a single-layer DVD-ROM can hold 4.7 GB of error-protected data, more than 6 CD-ROMs.

Capacity: 194 MiB (8 cm), 650–900 MiB (12 cm)

Standard: ISO/IEC 10149

Read mechanism: 600-780nm laser diode, 150 KiB/s (1×), 10,800 KiB/s (72×)