Group 4 Optical Discs

What is an Optical Discs? Type of storage media that consists of flat, round, portable disc made of metal, plastic and lacquer that is written and read by a laser.

Optical Disc Purposes Storage Media: Photos Movies Music Data

History Invented: First Optical Disc 1958 1961 and 1969-David Paul Gregg California electronic company First Optical Disc Music Computer software

Types of Optical Disc CD-ROM CD-R CD-RW DVD-ROM Ect….. Compact disc read only memory CD-R Compact disc recordable CD-RW Compact Disc Rewritable DVD-ROM Digital Video Disc read only memory Ect…..

Cares of Optical Discs DO NOT: DO: Eat, Smoke, Drink Touch underside of the disc Stack disc Sunlight and heat DO: Hold disc by the edges Store disc in jewel box

Advantages Mass storage capacity Low cost Portable Non-volatile

Disadvantages Not enough space Duplications Losing data CAN NOT: Rewrite Rerecord

Prices Pohnpei: State: 50% will Raise…. Movie Land-$1.00 or less

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