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Encyclopedia > Resource (computer science)

A resource, also referred to as system resource, is any physical or virtual system component of a computer system with limited availability. Following this definition every device connected to a computer system is a resource, every internal system component, like disks, processors and memory are resources. Virtual system resources include files, network connections and memory areas. Typical hard drives of the mid-1990s. ... Processor can mean: A central processing unit of a computer. ... A four-megabyte RAM card for the VAX 8600 computer (circa 1986). ... A computer file is a collection of information that is stored in a computer system and can be identified by its full path name. ...


Major resource types

CPU can stand for: in computing: Central processing unit in journalism: Commonwealth Press Union in law enforcement: Crime prevention unit in software: Critical patch update, a type of software patch distributed by Oracle Corporation in Macleans College is often known as Ash Lim. ... A four-megabyte RAM card for the VAX 8600 computer (circa 1986). ... The memory pages of the virtual address space seen by the process, may reside non-contiguously in primary, or even secondary storage. ... Typical hard drives of the mid-1990s. ... Network cards such as this one can transmit data at high rates over ethernet cables. ...

Resource management

A resource handle is an identifier for a resource that is currently being accessed. Resource handles can be opaque, in which case they are often integer numbers, or they can be pointers that allow access to further information. Common resource handles are filedescriptors and sockets. Identifiers (IDs) are lexical tokens that name entities. ... The integers consist of the positive natural numbers (1, 2, 3, …), their negatives (−1, −2, −3, ...) and the number zero. ... It has been suggested that Software pointer be merged into this article or section. ... A socket generally designates a cavity or region used for fitting and connecting some specific device. ...


Resource tracking is the ability of an operating system, virtual machine or other program to terminate the access to a resource that has been allocated by a program but has not been deallocated immediately after use. When implemented by a virtual machine this is often done in the form of garbage collection. To meet Wikipedias quality standards, this article or section may require cleanup. ... In general terms, a virtual machine in computer science is software that creates a virtualized environment between the computer platform and the end user in which the end user can operate software. ... Program or Programme may refer to: Computer program Radio programming Television program(me), Webcast Program (management) 12-step program Program (The Animatrix), a short film in The Animatrix series Event programme British tabloid form of comic book, called prog in short. ... In computer science, garbage collection (also known as GC) is a form of automatic memory management. ...


Access to memory areas is often controlled by semaphores, which allows a pathological situation called a deadlock, when different threads or processes try to allocate resources already allocated by each other. A deadlock usually leads to a program becoming partially or completely unresponsive. A semaphore is a protected variable (or abstract data type) and constitutes the classic method for restricting access to shared resources (e. ... A deadlock is a situation wherein two or more competing actions are waiting for the other to finish, and thus neither ever does. ... A thread in computer science is short for a thread of execution. ... In computing, a process is a running instance of a program, including all variables and other states. ...


Access to resources is also sometimes regulated by queuing; in the case of computing time on a CPU the controlling algorithm of the task queue is called a scheduler. In providing services to people, and in computer science, transport and operations research a queue is a First-In-First-Out (FIFO) process â€” the first element in the queue will be the first one out. ... CPU redirects here. ... Flowcharts are often used to represent algorithms. ... A task is an execution path through address space. In other words, a set of program instructions that is loaded in memory. ... Scheduler can refer to many things: A person working in broadcasting, who is scheduling the content of a radio or television channel. ...


See also

The term resource is a foundational term in World Wide Web architecture because it is the root of Uniform Resource Identifiers, also known as URIs and URLs. ... The resource fork is a construct of the Mac OS operating system and implemented in all of the filesystems used for system drives on the Macintosh, MFS, HFS and HFS Plus (However later versions of mac OS could read and write to disks in formats that didnt support resourse... In Microsoft Windows, resources are read-only data embedded in an EXE or DLL files. ... In the Java programming language a resource is a piece of data than can be accessed relative to the code of an application. ...

  Results from FactBites:
 
Resource (computer science) - Wikipedia, the free encyclopedia (258 words)
Resource handles can be opaque, in which case they are often integer numbers, or they can be pointers that allow access to further information.
Resource tracking is the ability of an operating system, virtual machine or other program to terminate the access to a resource that has been allocated by a program but has not been deallocated immediately after use.
Access to resources is also sometimes regulated by queuing; in the case of computing time on a CPU the controlling algorithm of the task queue is called a scheduler.
DEAS - Research - Research Centers - Computer Science (415 words)
Harvard's faculty in computer science investigate a wide range of topics, including ground-breaking work in provably secure cryptography, the implementation of sensor nets, developments at the interface of economics and computer science, and discoveries in VLSI.
Since computer science is inside of a dynamic hub that links to the rest of the University, from fields such as Electrical Engineering, Physics, Chemistry, and Biology to Harvard's professional schools in medicine and business.
The state-of-the-art building that houses activities in computer science and electrical engineering, Maxwell Dworkin, was underwritten by two of the Division's most famous attendees, Bill Gates COL '77 and his classmate Steven Ballmer '77.
  More results at FactBites »

 
 

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