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The AppleCD SC Plus was Apple Computer's second CD-ROM drive, a replacement for the AppleCD SC which was introduced in 1991. Identified as model number M3021, just like its predecessor, the AppleCD SC, it used a 1x Read Only Media CD-ROM drive. The Plus could read a CD with up to 750 MB of data over the 650 MB of the AppleCD SC.
An external CD/DVD SuperDrive. SuperDrive is the product name for a floppy disk drive and later an optical disc drive made and marketed by Apple Inc. The name was initially used for what Apple called their high-density floppy disk drive, and later for the internal CD and DVD drive integrated with Apple computers.
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.
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.
Original CD-ROM drives could read data at about 150 kB/s, 1× constant angular velocity (CAV), [1] the same speed of compact disc players without buffering. As faster drives were released, the write speeds and read speeds for optical discs were multiplied by manufacturers, far exceeding the drive speeds originally released onto the market.
Plasmon Data Systems (Defunct in late 1990's) [21] Prodisc; Pressing-Media www.pressing-media.com; PrimeDisc [22] Princo Corp [23] (seems to have stopped, as of 2020 they no longer appear on their home page) [24] Panasonic (Matsushita) (made DVD-RAM, stopped due to shrinking demand; made Blu-ray discs for recording until Feb 2023 [25] [26])
To take advantage of the drive's extended storage and new capabilities, it required the new SWIM (Sander–Wozniak Integrated Machine) floppy disk controller chip to be present on the Macintosh and Apple II, the latter requiring the Apple II 3.5 Disk Controller Card which integrated the chip.
An optical disc drive is a device in a computer that can read CD-ROMs or other optical discs, such as DVDs and Blu-ray discs. Optical storage differs from other data storage techniques that make use of other technologies such as magnetism , such as floppy disks and hard disks , or semiconductors , such as flash memory .
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