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Sahdev Sharma 8 years, 4 months ago
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CD | DVD |
| Stands for | Compact Disc | Digital Versatile Disc |
| Purpose | CDs are made with the purpose of holding audio files as well as program files. | DVDs are made with the purpose of holding video files, movies, substantial amount of programs, etc. |
| Capacity | Typically up to 700 MiB (up to 80 minutes audio) | DVD can range from 4.7 GB to 17.08 GB. |
| Read mechanism | 780 nm wavelength (infrared and red edge) semiconductor laser, 1200 Kib/s (1×) | 650 nm laser, 10.5 Mbit/s (1×) |
| Write mechanism | 1200 Kib/s (1×) | 10.5 Mbit/s (1×) |
| Types | CD-R, CD-RW, CD-Text, CD + Graphics, CD + Extended Graphics, Super Audio CD, CD-MIDI, CD-ROM, Video CD, Super Video CD, Photo CD, CD-I, Enhanced CD, VinylDisc and Bootable CD. | DVD-RW, DVD+RW, DVD-RAM and Blu-Ray. |
| Developed by: | Philips, Sony | Philips, Sony, Toshiba, and Panasonic |
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