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A CD-ROM (/ ˌ s iː d iː ˈ r ɒ m /, compact disc read-only memory) is a type of read-only memory consisting of a pre-pressed optical compact disc that contains data computers can read, but not write or erase.
Super Audio CD (SACD) is a high-resolution, read-only optical audio disc format that was designed to provide higher-fidelity digital audio reproduction than the Red Book. Introduced in 1999, it was developed by Sony and Philips, the same companies that created the Red Book. SACD was in a format war with DVD-Audio, but neither has replaced audio ...
CD-R (Compact disc-recordable) is a digital optical disc storage format. A CD-R disc is a compact disc that can only be written once and read arbitrarily many times. CD-R discs (CD-Rs) are readable by most CD readers manufactured prior to the introduction of CD-R, unlike CD-RW discs.
An optical disc is designed to support one of three recording types: read-only (such as CD and CD-ROM), recordable (write-once, like CD-R), or re-recordable (rewritable, like CD-RW). Write-once optical discs commonly have an organic dye (may also be a ( phthalocyanine ) azo dye , mainly used by Verbatim , or an oxonol dye, used by Fujifilm [ 4 ...
The Dreamcast was considered by the video game industry as one of the most secure consoles on the market with its use of the GD-ROM, [7] but this was nullified by a flaw in the Dreamcast's support for the MIL-CD format, a Mixed Mode CD first released on June 25, 1999, that incorporates interactive visual data similarly to CD+G.
Types of Compact Discs (CDs) include: CD-ROM: (Compact Disc Read Only Memory) It can only be read through the drive. And are usually manufactured by in bulk by a stamp type system. CD-R: (Compact Disc Recordable) was invented in the 1990s. Using CD-R, it is possible to write data once on a disc at home without the stamping equipment required ...
Read-only memory (ROM) is a type of non-volatile memory used in computers and other electronic devices. Data stored in ROM cannot be electronically modified after the manufacture of the memory device. Read-only memory is useful for storing software that is rarely changed during the life of the system, also known as firmware.
In June 1985, the computer-readable CD-ROM (read-only memory) and, in 1990, recordable CD-R discs were introduced. [ a ] Recordable CDs became an alternative to tape for recording and distributing music and could be duplicated without degradation in sound quality.