Question

a DVD can store data of how much capacity​

Answer 1

Answer:

1GB...................ONLY

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Answer 2

Answer:

DVD (abbreviation for Digital Versatile Disc or Digital Video Disc)[8][9] is a digital optical disc storage format invented and developed in 1995 and released in late 1996. The medium can store any kind of digital data and is widely used for software and other computer files as well as video programs watched using DVD players. DVDs offer higher storage capacity than compact discs while having the same dimensions.

DVD

DVD logo.svg

DVD-Video bottom-side.jpg

The data side of a DVD manufactured by Sony DADC

Media type

Optical disc

Encoding

DVD-ROM and DVD-R(W) use one encoding, DVD-RAM and DVD+R(W) uses another

Capacity

4.7 GB (single-sided, single-layer – common)

8.5 GB (single-sided, double-layer)

9.4 GB (double-sided, single-layer)

17.08 GB (double-sided, double-layer)

Up to four layers are possible in a standard form DVD.

Read mechanism

300-650 nm laser, 10.5 Mbit/s (1×)

Write mechanism

650 nm laser with a focused beam using more power than for reading, 10.5 Mbit/s (1×)

Standard

DVD Forum's DVD Books[1][2][3] and DVD+RW Alliance specifications

Developed by

Sony, Panasonic, Toshiba, Philips, Samsung

Dimensions

Diameter: 12 cm (4.7 in)

Thickness: 1.2 mm (0.047 in)

Weight

16 grams (0.56 oz)

Usage

Standard definition video, standard definition sound, PS2, Xbox and Xbox 360 games

Extended from

LaserDisc

Compact disc

Extended to

DVD+RW, DVD-RAM (Fixed-track writable media)

HD-DVD

Blu-ray

Released

November 1, 1996 (Japan)[4]

January 1997 (CIS and other Asia)

March 24, 1997 (United States)[5][6][7]

March 1998 (Europe)

February 1999 (Australia)

Prerecorded DVDs are mass-produced using molding machines that physically stamp data onto the DVD. Such discs are a form of DVD-ROM because data can only be read and not written or erased. Blank recordable DVD discs (DVD-R and DVD+R) can be recorded once using a DVD recorder and then function as a DVD-ROM. Rewritable DVDs (DVD-RW, DVD+RW, and DVD-RAM) can be recorded and erased many times.

DVDs are used in DVD-Video consumer digital video format and in DVD-Audio consumer digital audio format as well as for authoring DVD discs written in a special AVCHD format to hold high definition material (often in conjunction with AVCHD format camcorders). DVDs containing other types of information may be referred to as DVD data discs.