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The external models were installed in a Zip-drive-style case, and used standard USB 1.1 connections. Iomega used the DirectCD software from Adaptec to allow UDF drive-letter access to CD-R or CD-RW media. The company released an open standard CD-R drive and CD-RW media under the same ZipCD name.
Some CD players have automatic gain control (AGC) to vary the power of the laser to ensure reliable playback of CD-RW discs. [14] [15] Readability (the ability to read physically damaged or soiled discs) may vary among optical drives due to differences in optical pickup systems, firmwares, and damage patterns. [16]
It supported all of Apple's 3.5" floppy disk formats as well as all standard PC formats (e.g. MS-DOS, Windows), allowing the Macintosh to read and write all industry-standard floppy disk formats. The external drive was offered only briefly with support for the Apple II, coming late in that product's life.
8-inch floppy disk, inserted in drive, (3½-inch floppy diskette, in front, shown for scale) 3½-inch, high-density floppy diskettes with adhesive labels affixed The first commercial floppy disks, developed in the late 1960s, were 8 inches (203.2 mm) in diameter; [4] [5] they became commercially available in 1971 as a component of IBM products and both drives and disks were then sold ...
Using CD-R, it is possible to write data once on a disc at home without the stamping equipment required for CD-ROMs. These are considered write once, read many disks. CD-RW: (Compact Disc Re-Writable) same as the CD-R but can be erased and reused. There is a limit on how many times a CD-RW can be written. Presently this limit is 1,000 times.
The floppy disk emulator can provide other systems access to the data on the emulated floppy in a number of ways: Direct access to some dedicated disk partition (e.g.: a 1.44MB partition on a USB key) Floppy file system translation (e.g.: FAT12 floppy ↔ USB key folder) Floppy disk images (e.g.: raw floppy ↔ .img/.iso USB key file)