Punch card in which a piece of microfilm is mounted
An aperture card is a type of punched card with a cut-out window into which a chip of microfilm is mounted. Such a card is used for archiving or for making multiple inexpensive copies of a document for ease of distribution. The card is typically punched with machine-readable metadata associated with the microfilm image, and printed across the top of the card for visual identification; it may also be punched by hand in the form of an edge-notched card.[1] The microfilm chip is most commonly 35mm in height, and contains an optically reduced image, usually of some type of reference document, such as an engineering drawing, that is the focus of the archiving process. Machinery exists to automatically store, retrieve, sort, duplicate, create, and digitize cards with a high level of automation.
Aperture cards have several advantages and disadvantages when compared to digital systems. While many aperture cards still play an important role in archiving, their role is gradually being replaced by digital systems.
^Cady, Susan A. (1999). "Microfilm technology and information systems". In Bowden, Mary Ellen; Hahn, Trudi Bellardo; Williams, Robert Virgil (eds.). Proceedings of the 1998 Conference on the History and Heritage of Science Information Systems. ASIS monograph series. Medford, NJ: Published for the American Society for Information Science and the Chemical Heritage Foundation by Information Today. pp. 177–186. CiteSeerX 10.1.1.99.3796. ISBN 1573870803. OCLC 42022214. Early aperture cards were sometimes mounted on McBee Keysort cards that could be notched on the margins to indicate an index term and then sorted manually with tools resembling knitting needles.
An aperturecard is a type of punched card with a cut-out window into which a chip of microfilm is mounted. Such a card is used for archiving or for making...
A punched card (also punch card or punched-card) is a piece of card stock that stores digital data using punched holes. Punched cards were once common...
reproduction, as well as permitting mechanical card-sorting equipment to sort and select microfilm drawings. Aperturecard mounted microfilm is roughly 3% of the...
punched cards. An aperturecard is a special type of punched card with a cut out window into which a chip of microfilm is mounted. The card is punched with...
information required by the user on the card itself, handwritten, typewritten, or on microfilm (aperturecard). Every card in a stack had the same set of pre-punched...
Services, "New Farm State School", p. 6 Department of Public Works (DPW), aperturecard, 56M-9-5, "New Farm State School Improvements etc.", 12 September 1912...
central part of the aperture opening. Recently, photographers have exploited the shape of the bokeh by creating a simple mask out of card with shapes such...
Adam Laurie; Zac Franken (2011). "Chip & PIN is definitely broken" (PDF). Aperture Labs. Archived from the original (PDF) on 19 October 2015. Retrieved 10...
The graphics address remapping table (GART), also known as the graphics aperture remapping table, or graphics translation table (GTT), is an I/O memory...
can be applied, and shows Fraunhofer diffraction patterns for various apertures. A detailed mathematical treatment of Fraunhofer diffraction is given...
virtual aperture in an optical system. Only rays which pass through this virtual aperture can exit the system. The exit pupil is the image of the aperture stop...
strip and developed it, and then inserted four such images into an aperturecard. The card could be read directly on a microfilm reader, or used as negatives...
lets you choose manually the aperture and shutter speed. Av (Aperture priority): The camera lets the user choose the aperture (f/) value and then automatically...
obstacle or through an aperture into the region of geometrical shadow of the obstacle/aperture. The diffracting object or aperture effectively becomes a...
built-in AE modes to favor faster shutter speeds or smaller apertures, such as the sports action card. Peggy (2021-05-13). "Minolta Dynax 7000i (Maxxum 7000i)"...
retrieved for study. Kodak was in the process of introducing its "Minicard" aperturecard product, and Leghorn felt this was a natural solution for the problem...
MHz. According to third-party testing, although after plugging in the SIM card, the network standard indication of the phone does not show that it's 5G...
Specialized uses of punched cards such as toll collection, microform aperture cards, and punched card voting kept unit record equipment in use into the twenty-first...
Accelerated Graphics Port (AGP) is a parallel expansion card standard, designed for attaching a video card to a computer system to assist in the acceleration...
visualize and share ideas in real-time 5 Wicks and Wilson C-Series aperturecard scanners Up to 400 dpi Black and white, or grayscale Programmable reduction...
selection of aperture and shutter priority. Custom white balance. Built in flash. Hot-shoe for external flash. USB connectivity. A Compact Flash card slot. Availability...
SIM card and a microSD memory card up to 1 TB or for 2 SIM cards and a microSD memory card up to 1 TB or only for 1 SIM card and microSD memory card up...
Portal Revolution, a mod for Portal 2 Portal Reloaded, a mod for Portal 2 Aperture Tag, a mod for Portal 2 Portal (1986 video game), a 1986 computer game...
cost to the DPW for erection of the building, which was £25,744. DPW, aperturecard 162-22-8, dated June 1936. 'Ithaca Creek SS' The Courier-Mail, 24 Mar...
Canon released firmware 1.0.8 that fixed a phenomenon in which the set aperture moves unexpectedly when shooting movies in manual exposure mode using some...
interval exposure features, 39 rather than 11 focus points, dual SD memory card slots, virtual horizon (in live view and viewfinder) and compatibility with...
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