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The Portable Document Format (PDF) was created by Adobe Systems, introduced at the Windows and OS/2 Conference in January 1993 and remained a proprietary format until it was released as an open standard in 2008.
The Preview application can display PDF files, as can version 2.0 and later of the Safari web browser. System-level support for PDF allows macOS applications to create PDF documents automatically, provided they support the OS-standard printing architecture. The files are then exported in PDF 1.3 format according to the file header.
A von Neumann architecture scheme. The von Neumann architecture—also known as the von Neumann model or Princeton architecture—is a computer architecture based on the First Draft of a Report on the EDVAC, [1] written by John von Neumann in 1945, describing designs discussed with John Mauchly and J. Presper Eckert at the University of Pennsylvania's Moore School of Electrical Engineering.
PDF is a standard for encoding documents in an "as printed" form that is portable between systems. However, the suitability of a PDF file for archival preservation depends on options chosen when the PDF is created: most notably, whether to embed the necessary fonts for rendering the document; whether to use encryption; and whether to preserve additional information from the original document ...
PDF (gene), a gene that in humans encodes the enzyme peptide deformylase; Palladium fluoride (PdF), a series of chemical compounds; Parton distribution function, in particle physics; Peak draw force, in a compound bow in archery; Percival David Foundation of Chinese Art; Pigment dispersing factor, in biology; Planar deformation features, in geology
zip – a file format, also used as a verb to mean compress. The file format was created by Phil Katz, and given the name by his friend Robert Mahoney. The compression tool Phil Katz created was named PKZIP. Zip means "speed", and they wanted to imply their product would be faster than ARC and other compression formats of the time.
CDSA—Common Data Security Architecture; CERT—Computer ... ENIAC—Electronic Numerical Integrator And Computer; EOF—End of File; ... PDF—Portable Document Format;
The AFP architecture consists of a number of sub-architectures: MO:DCA-P (Mixed Object:Document Content Architecture-Presentation), the Page Description Language file format that describes the text and graphics on a page. The 'Mixed Object' moniker refers to the fact that a MO:DCA file can contain multiple types of objects, including text ...