CD-R CD-R CD-R (Compact Disc-Recordable) is a digital optical disc storage format. A CD-R disc is a compact disc that can be written once and read arbitrarily many times. CD-R discs (CD-Rs) are readable by most plain CD readers, i.e., CD readers manufactured prior to the introduction of CD-R. This is an advantage over CD-RW, which can be re-written but cannot be played on many plain CD readers. Originally named CD Write-Once (WO), the CD-R specification was first published in 1988 by Philips and Sony in the 'Orange Book'. The Orange Book consists of several parts, furnishing details of the CD-WO,
Philips CD-i completely arrange the whole album in their own personal way with over 15,000 points of customization. CD-i has a series of learning games ("edutainment") targeted at children from infancy to adolescence. Those intended for a younger audience included "Busytown", "The Berenstain Bears" and various others which usually had vivid cartoon-like settings accompanied by music and logic puzzles. Although extensively marketed by Philips, notably via infomercial, consumer interest in CD-i titles remained low. By 1994, sales of CD-i systems had begun to slow, and in 1998 the product line was dropped. Philips had by then already sold its gaming subsidiary, Philips