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.
John Leigh Philips Philips himself became involved in the textile industry. For a time he was in business with his brother Francis, who outlived him, dying in 1850. As a young man Philips frequented the "Roscoe Circle" in Liverpool—the intellectual group around William Roscoe—meeting there William Paulet Carey, James Currie and Daniel Daulby. In late 1803 Philips was granted command of the First Regiment of the Manchester and Salford Corps, a volunteer militia which served as part of Britain's Home Guard during the French Revolutionary Wars. His brother Francis was appointed to a subordinate role in the same Corps alongside three of his