AIP (Archival Information Package):AIP (Archival Information Package): The internal representation of an object into the Digital Preservation Repository, including all data generated upon ingest (e.g., descriptive metadata) needed to manage and preserve it. See also DIP and SIP.
BIT: The fundamental unit of digital information storage, which can have a binary value of either 1 or 0.
BITCURATOR Access project developed tools to help libraries, archives, and museums provide web-based and local access to born-digital materials held on disk images.
BITCURATOR Environment is a Ubuntu-derived Linux distribution geared towards the needs of archivists and librarians. It includes a suite of open source digital forensics and data analysis tools to help collecting institutions process born-digital materials.
BITSTREAM: A sequence of bytes, which has meaningful common properties for the purposes of preservation. A bitstream may be a file or a component of a file.
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DISK IMAGE: A computer file containing the complete contents and structure representing a data storage medium or device, such as a hard drive, floppy disk, optical disc, or USB flash drive. A disk image is usually made by creating a sector-by-sector copy of the source medium, thereby perfectly replicating the structure and contents of a storage device independent of the file system.
ePADD is a software package developed by Stanford University's Special Collections & University Archives that supports archival processes around the appraisal, ingest, processing, discovery, and delivery of email archives. ePADD Phase 2 is being developed from 2015-2018 by staff of the Department of Special Collections and University Archives, Stanford University Libraries (SUL), Stanford University, in collaboration with partners at Harvard University, the Metropolitan New York Library Council (METRO), University of Illinois at Urbana-Champaign, and University of California, Irvine.
EMULATION: The imitation of a computer system, performed by a combination of hardware and software, that allows programs to run between incompatible systems. Or, the ability of a program or device to imitate another program or device.
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FLIPPY DISKS: People would sometimes fill one side of a 5.25" disk and then flip it over to store more on the other side. Disks used this way are called "flippy" disks. 5.25" disks have a hole, called the index hole, that lets the drive know if the disk is rotating. (The index hole has other purposes also.) The problem with flippy disks is that when the disk is inserted upside-down, the drive cannot see the index hole. Many drives won't read from the disk unless they can see the index hole. There is no recommended drive for reading flippy disks at this time.
FLOPPY DISK, also called a floppy, diskette, or just disk, is a type of disk storage composed of a disk of thin and flexible magnetic storage medium, sealed in a rectangular plastic enclosure lined with fabric that removes dust particles. Floppy disks, initially as 8-inch (200 mm) media and later in 5¼-inch (133 mm) and 3½-inch (90 mm) sizes, were a ubiquitous form of data storage and exchange from the mid-1970s into the first years of the 21st century.
FRED (Forensic Recovery of Evidence Device): The FRED family of forensic workstations (produced by Digital Intelligence of New Berlin, WI) are highly integrated, flexible and modular forensic platforms. Available in mobile, stationary and laboratory configurations, these systems are designed for both the acquisition and examination of computer evidence.
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INGEST: The process by which a digital object or metadata package is absorbed by a different system than the one that produced it.
JPEG (Joint Photographic Experts Group) is the name of the group that developed the standard. JPG is a compression
JAZ DRIVE is a removable hard disk storage system sold by the Iomega company from 1996 to 2002. Following the success of the Iomega Zip drive, which stored data on removable magnetic cartridges with 100MB nominal capacity, the company developed and released the Jaz drive with 1GB capacity per removable disk, increased to 2GB in 1998.
JPEG (Joint Photographic Experts Group) is the name of the group that developed the standard. JPG is a compression method for images.
JPEG 2000 is a wavelet-based image compression standard. It was created by the Joint Photographic Experts Group committee in the year 2000 with the intention of superseding their original discrete cosine transform-based JPEG standard (created about 1991). The standardized filename extension is JP2.
KRYOFLUX is a USB-based hardware and software solution for preserving software on floppy disks. It was developed by the Software Preservation Society. Works with all major 3.5" and 5.25" drives; works well with selected 3" (e.g. Amstrad FDI-1) drives; also works with 8" (e.g. Shugart 851; might require additional adapter) drives; other types of drives and media currently under investigation.
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WEB HARVESTING is performed using open-source tools developed by the Internet Archive to crawl and provide access to the content. The data can be kept in the ISO standard WARC (WebARChive) file format. The approach to Web harvesting is fairly stable.
ZIP DRIVE is a medium-to-high-capacity (at the time of its release) removable floppy disk storage system that was introduced by Iomega in late 1994. Originally, Zip disks launched with capacities of 100 MB, but later versions increased this to first 250 MB and then 750 MB.