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  2. Disk formatting - Wikipedia

    en.wikipedia.org/wiki/Disk_formatting

    The low-level format of floppy disks (and early hard disks) is performed by the disk drive's controller. For a standard 1.44 MB floppy disk, low-level formatting normally writes 18 sectors of 512 bytes to each of 160 tracks (80 on each side) of the floppy disk, providing 1,474,560 bytes of storage on the disk.

  3. Floppy disk format - Wikipedia

    en.wikipedia.org/wiki/Floppy_disk_format

    When a soft-sectored disk is low-level "formatted", each track is written with a number of bytes calculated to fit within 360 degrees at the highest expected motor speed. Special bit patterns are written right before the location where a sector should start, and serve as identifiers, similar to the punched holes used by hard-sectored disks.

  4. Interleaving (disk storage) - Wikipedia

    en.wikipedia.org/wiki/Interleaving_(disk_storage)

    Low-level format utility performing interleave speed tests on a 10-megabyte IBM PC XT hard drive. Historically, interleaving was used in Minimizing missed rotations between instructions on computers storing instructions on a drum memory; Ordering block storage on storage devices such as drums, floppy disk drives and hard disk drives. The ...

  5. High- and low-level - Wikipedia

    en.wikipedia.org/wiki/High-_and_low-level

    A low-level programming language is one like assembly language that contains commands closer to processor instructions. In formal methods, a high-level formal specification can be related to a low-level executable implementation (e.g., formally by mathematical proof using formal verification techniques).

  6. USB communications - Wikipedia

    en.wikipedia.org/wiki/USB_communications

    Low speed (LS) and Full speed (FS) modes use a single data pair, labelled D+ and D−, in half-duplex. Transmitted signal levels are 0.0–0.3 V for logical low, and 2.8–3.6 V for logical high level. The signal lines are not terminated. High speed (HS) mode uses the same wire pair, but with different electrical conventions.

  7. Comparison of data-serialization formats - Wikipedia

    en.wikipedia.org/wiki/Comparison_of_data...

    ^ ASN.1 has X.681 (Information Object System), X.682 (Constraints), and X.683 (Parameterization) that allow for the precise specification of open types where the types of values can be identified by integers, by OIDs, etc. OIDs are a standard format for globally unique identifiers, as well as a standard notation ("absolute reference") for ...

  8. AOL Mail

    mail.aol.com/?icid=aol.com-nav

    Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

  9. SmartMedia - Wikipedia

    en.wikipedia.org/wiki/SmartMedia

    Affected SmartMedia cards will be unusable, and the camera or device will be unable to format, read or write to the card. Data loss and a change in the capacity that the device displays are also signs of a low-level format corruption or a corrupted CIS (Card Information System).