MicroformA microform is a scaled-down reproduction of a document made for the purposes of transmission, storage, reading, and printing. The original document is typically in the form of photographic film or paper. Four formats are common: microfilm (reels), microfiche (flat sheets), micro-opaques (like microcards), and aperture cards.
Engineering drawingType of technical drawing used to define requirements for engineered items Engineering drawing of a machine tool part Part of series onTechnical drawings By field Architectural drawing Floor plan Electrical drawing Engineering drawing Plumbing drawing Structural drawing Scientific illustration Mechanical systems drawing Working drawing Archaeological illustration Types Sketches Blueprint Technical drawing Assembly drawing Cross section Cutaway diagram Line drawings Patent drawings Technical illustration CAD Product and manufacturing information Exploded view Standards INT: ISO 128 US: ANSI/ASME Y14.1 RU: ESKD See also Outline of drawing and drawings 3D projection vteAn engineering drawing is a type of technical drawing.
Punched cardA punched card (also punch card) is a stiff paper-based medium used to store digital information via the presence or absence of holes in predefined positions. Developed over the 19th to 20th centuries, punched cards were widely used for data processing, the control of automated machines, and computing. Early applications included controlling weaving looms and recording census data.
Punched card sorterA punched card sorter is a machine for sorting decks of punched cards. Sorting was a major activity in most facilities that processed data on punched cards using unit record equipment. The work flow of many processes required decks of cards to be put into some specific order as determined by the data punched in the cards. The same deck might be sorted differently for different processing steps.
Edge-notched cardEdge-notched cards or edge-punched cards are a system used to store a small amount of binary or logical data on paper index cards, encoded via the presence or absence of notches in the edges of the cards. The notches allow efficient sorting of a large number of cards in a paper-based database, as well as the selection of specific cards matching multiple desired criteria.
CopyingCopying is the duplication of information or an based on an instance of that information or artifact, and not using the process that originally generated it. With analog forms of information, copying is only possible to a limited degree of accuracy, which depends on the quality of the equipment used and the skill of the operator.
OpticsBranch of physics that studies lightOptics is the branch of physics that studies the behaviour, manipulation, and detection of electromagnetic radiation, including its interactions with matter and instruments that use or detect it. Optics usually describes the behaviour of visible, ultraviolet, and infrared light. The study of optics extends to other forms of electromagnetic radiation, including radio waves, microwaves, and X-rays.MetadataData about other dataIn the 21st century, metadata typically refers to digital forms, but traditional card catalogs contain metadata, with cards holding information about books in a library (author, title, subject, etc.).Metadata (or metainformation) is data (or information) that defines and describes the characteristics of other data. It often helps to describe, explain, locate, or otherwise make data easier to retrieve, use, or manage.Index termIn information retrieval, an index term (also known as subject term, subject heading, descriptor, or keyword) is a term that captures the essence of the topic of a document. Index terms make up a controlled vocabulary for use in bibliographic records. They are an integral part of bibliographic control, which is the function by which libraries collect, organize and disseminate documents.Photographic printingPhotographic printing is the process of producing a final image on paper for viewing, using chemically sensitized paper. The paper is exposed to a photographic negative, a positive transparency (or slide), or a digital image file projected using an enlarger or digital exposure unit such as a LightJet or Minilab printer. Alternatively, the negative or transparency may be placed atop the paper and directly exposed, creating a contact print.Numbering schemeA numbering scheme is a process of assigning nominal numbers to entities. These generally require an agreed set of rules, or a central coordinator. The schemes can be considered to be examples of a primary key of a database management systemtable, whose table definitions require a database design.
ArchiveAn archive is an accumulation of historical records or materials, in any medium, or the physical facility in which they are located. Archives contain primary source documents that have accumulated over the course of an individual or organization's lifetime, and are kept to show the history and function of that person or organization.
United States Air ForceThe United States Air Force (USAF) is the air service branch of the United States Armed Forces. It is a part of the United States Department of Defense (DoD) and is one of the six armed forces and one of the eight uniformed services of the United States. Tracing its origins to 1 August 1907, as a part of the United States Army Signal Corps, the Air Force was established by transfer of personnel from the Army Air Forces with the enactment of the National Security Act of 1947.*As an Amazon Associate I earn from qualifying purchases.