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The integrated circuit (IC) chips in a computer typically contain billions of tiny metal–oxide–semiconductor field-effect transistors (MOSFETs). [48] Components directly attached to or to part of the motherboard include: At least one CPU (central processing unit), which performs most of the calculations that enable a computer to function. [49]
The final revised documentation for PDF 1.7 was approved by ISO Technical Committee 171 in January 2008 and published as ISO 32000-1:2008 on July 1, 2008, and titled Document management – Portable document format – Part 1: PDF 1.7. ISO 32000-1:2008 is the first ISO standard for full function PDF.
A PDF file is organized using ASCII characters, except for certain elements that may have binary content. The file starts with a header containing a magic number (as a readable string) and the version of the format, for example %PDF-1.7.
A human computer, with microscope and calculator, 1952. It was not until the mid-20th century that the word acquired its modern definition; according to the Oxford English Dictionary, the first known use of the word computer was in a different sense, in a 1613 book called The Yong Mans Gleanings by the English writer Richard Brathwait: "I haue [] read the truest computer of Times, and the best ...
PCMCIA—Personal Computer Memory Card International Association; PCM—Pulse-Code Modulation; PCRE—Perl Compatible Regular Expressions; PD—Public Domain; PDA—Personal Digital Assistant; PDF—Portable Document Format; PDH—Plesiochronous Digital Hierarchy; PDP—Programmed Data Processor; PE—Physical Extents; PE—Portable Executable
The following outline is provided as an overview of and topical guide to computers: . Computers – programmable machines designed to automatically carry out sequences of arithmetic or logical operations.
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A technology consisting of computer components and recording media used to retain digital data. It is a core function and fundamental component of computers. [1] device memory local memory associated with a hardware device such as a graphics processing unit or OpenCL compute device, distinct from main memory. Digital Video Disc (DVD)