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For example, 1/2.5 converts to 2/5 as a simple fraction, or 0.4 as a decimal number. This "inch" system gives a result approximately 1.5 times the length of the diagonal of the sensor. This "inch" system gives a result approximately 1.5 times the length of the diagonal of the sensor.
Atari 8-bit: 5 1 ⁄ 4 inch Single 1 40 18 128 soft 90 kB 288 FM [NB 5] Dual 26 128 130 kB MFM Double 18 256 180 kB Double 2 18 256 360 kB 300 Atari ST/TT/Falcon 3 1 ⁄ 2 inch Double 1 80 9 512 soft 360 kB 300 MFM 2 720 kB High 18 1,440 kB Coleco ADAM: 5 1 ⁄ 4 inch Double 1 40 8 512 soft 160 kB 300 MFM Commodore 64 (8-bit) 5 1 ⁄ 4 inch ...
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 ...
8-, 5.25-, 3.5-, 2.5-, 1.8- and 1-inch HDDs, together with a ruler to show the length of platters and read-write heads A newer 2.5-inch (63.5 mm) 6,495 MB HDD compared to an older 5.25-inch full-height 110 MB HDD. IBM's first hard drive, the IBM 350, used a stack of fifty 24-inch platters and was of a size comparable to two large refrigerators.
By 1988, the 3 + 1 ⁄ 2-inch was outselling the 5 + 1 ⁄ 4-inch. [69] In South Africa, the 3 + 1 ⁄ 2-inch format was generally called a stiffy disk, to distinguish it from the flexible 5 + 1 ⁄ 4-inch format. [70] [71] The term "3 + 1 ⁄ 2-inch" or "3.5-inch" disk is and was rounded from the 90 mm actual dimension of one side of the ...
The device cuts and plays five-inch records, of which it comes with 10, at both 33 and 45 RPM. Operating it is as simple as plugging a sound source — your phone, a mic, whatever — into the 1/8 ...
A Maxell-branded 3-inch Compact Floppy Disk. The floppy disk is a data storage and transfer medium that was ubiquitous from the mid-1970s well into the 2000s. [1] Besides the 3½-inch and 5¼-inch formats used in IBM PC compatible systems, or the 8-inch format that preceded them, many proprietary floppy disk formats were developed, either using a different disk design or special layout and ...
2 + 1 ⁄ 4 × 1 + 5 ⁄ 8 in 56 × 70 mm 8 10 12–13 15–16 2.4 inch (60.96 mm) stock, unperforated, paper-backed 121 roll film 1902 1941 1 + 5 ⁄ 8 × 2 + 1 ⁄ 2 in 122 roll film 1903 1971 3 + 1 ⁄ 4 × 5 + 1 ⁄ 2 in 6 or 10 Postcard format 123 roll film 1904 1949 4 × 5 in 124 roll film 1905 1961 3 + 1 ⁄ 4 × 4 + 1 ⁄ 4 in