CD-ROM developed by Japanese company Denon in 1982. It was an extension of Compact Disc Digital Audio, and adapted the format to hold any form of digital data, with a storage capacity of 553 MiB. CD-ROM was then introduced by Denon and Sony at a Japanese computer show in 1984. The "Yellow Book" is the technical standard that defines the format of CD-ROMs. One of a set of color-bound books that contain the technical specifications for all CD formats, the "Yellow Book", standardized by Sony and Philips in 1983, specifies a format for discs with a maximum capacity of 650 MiB.
Philips CD-i probably better for those who could wait a few months. An early 1995 review of the system in "GamePro" stated that "inconsistent game quality puts the CD-i at a disadvantage against other high-powered game producers." A late 1995 review in "Next Generation" criticized both Philips's approach to marketing the CD-i and the hardware itself ("The unit excels at practically nothing except FMV, and then only with the addition of a $200 digital video cartridge"). The magazine noted that while Philips had not yet officially discontinued the CD-i, it was dead for all intents and purposes, citing as evidence the fact