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What is the major difference between a CD and DVD?

CD and DVD sound like they are similar but they are different from each other both are carefully designed to perform different tasks. CDs mostly uses audio and program files and DVD is often used for video and program files.

CD (Compact Disk)

CDs are mostly used to store data. Before cd Floppy was used, whose work was to collect data from the computer instead of Floppy, the CD has been kept. CDs can store up to 700 megabytes of data, or about 80 minutes of audio. Mini CDs can store approximately 24 minutes of audio or program drivers. It evolve into many different types of CDs for various purposes. Including CD-Text, CD + Graphics, CD-ROM, Video CD, Super Video CD, and Photo CD, These CDs using for a variety of purposes.

DVD (Digital Versatile Disk)

Large storage capacity DVDs

DVD capacity varies between 1.4GB and 17GB. In other words, a single-layer DVD with 8 audio tracks, 9 video angles, 32 subtitles, menus, and other features can hold up to 2 hours of high-quality video and audio. A recordable Blu-ray disc with four data layers can store up to 128GB of information.

Good quality:

Firstly it has DVD only has a 480P resolution, and secondly, it comes the sound and video output are of superior quality, making them ideal for storing large amounts of data. Blu-ray discs have the capability of delivering 4K resolution.

 CDDVD
Stands forCompact DiscDigital Versatile Disc
Media typeOptical discOptical disc
TypesCD-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.
PurposeCDs 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, a substantial amount of programs, etc.
CapacityTypically up to 700 MiB (up to 80 minutes of audio)DVDs can range from 4.7 GB to 17.08 GB.
EncodingVariousVarious
Write mechanism1200 Kib/s (1×)10.5 Mbit/s (1×)
Read mechanism780 nm wavelength (infrared and red edge) semiconductor laser, 1200 Kib/s (1×)650 nm laser, 10.5 Mbit/s (1×)

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