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CD-ROM drives are rated with a speed factor relative to music CDs. If a CD-ROM is read at the same rotational speed as an audio CD, the data transfer rate is 150 Kbyte/s, commonly called "1×" (with constant linear velocity, short "CLV"). At this data rate, the track moves along under the laser spot at about 1.2 m/s.
Compact disc : CD-DA, CD-ROM, CD-R, CD-RW, ... the CD was the second optical disc technology to be invented, after the much larger LaserDisc (LD). By 2007, 200 ...
There, in 1965, Russell invented the overall concept of optical digital recording and playback. [1] He built prototypes, and the first was operating in 1973. In 1973, 1974, 1975 his invention was viewed by about 100 companies, including Philips and Sony, and more than 1500 descriptive brochures were distributed.
Eugen Pavel is a Romanian scientist and the claimed inventor of the Hyper CD-ROM.. Pavel graduated with a physics degree from the University of Bucharest in 1976. [1] He was awarded the Romanian Academy Prize in 1991 and obtained his doctorate in Physics from the Romanian Institute of Atomic Physics in 1992.
Compact Disc Digital Audio (CDDA or CD-DA), also known as Digital Audio Compact Disc or simply as Audio CD, is the standard format for audio compact discs. The standard is defined in the Red Book technical specifications , which is why the format is also dubbed "Redbook audio" in some contexts. [ 1 ]
Compact disc manufacturing is the process by which commercial compact discs (CDs) are replicated in mass quantities using a master version created from a source recording. This may be either in audio form ( CD-DA ) or data form ( CD-ROM ).
The CD takes up to 15 business days (Monday through Friday, excluding weekends) to arrive. If the CD does not arrive after 15 business days, please call 866-541-8233 to reorder the software. Note: All customers (free and paid, AOL and Netscape) are eligible to order an AOL CD.
ROM cartridges typically have less capacity than other media. [17] The PCjr-compatible version of Lotus 1-2-3 comes on two cartridges and a floppy disk. [18] ROM cartridges are typically more expensive to manufacture than discs, and storage space available on a cartridge is less than that of an optical disc like a DVD-ROM or CD-ROM.