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A laptop computer or notebook computer, also known as a laptop or notebook, is a small, portable personal computer (PC). Laptops typically have a clamshell form factor with a flat-panel screen on the inside of the upper lid and an alphanumeric keyboard and pointing device on the inside of the lower lid.
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. The format is a subset of a COS ("Carousel" Object Structure) format. [24]
The Portable Document Format (PDF) is a file format used to present documents in a manner independent of application software, hardware, and operating systems. Each PDF file encapsulates a complete description of the presentation of the document, including the text, fonts, graphics, and other information needed to display it.
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 ...
Another component of file systems is a dictionary that maps a file's name and metadata to the data block where its contents are stored. [104] Most file systems use directories to convert file names to file numbers. To find the block number, the operating system uses an index (often implemented as a tree). [105]
FS—File System; FSB—Front-Side Bus; fsck—File System Check; FSF—Free Software Foundation; FSM—Finite State Machine; FTTC—Fiber To The Curb; FTTH—Fiber To The Home; FTTP—Fiber To The Premises; FTP—File Transfer Protocol; FQDN—Fully Qualified Domain Name; FUD—Fear Uncertainty Doubt; FWS—Folding White Space; FXP—File ...
Within systems engineering, quality attributes are realized non-functional requirements used to evaluate the performance of a system. These are sometimes named architecture characteristics, or "ilities" after the suffix many of the words share.
The configuration of a computer is typically recorded in a configuration file. In modern computer systems, this is created and updated automatically as physical components are added or removed. Applications may assume that the configuration file is an accurate representation of the physical configuration and act accordingly. [1]