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While a computer program is a passive collection of instructions typically stored in a file on disk, a process is the execution of those instructions after being loaded from the disk into memory. Several processes may be associated with the same program; for example, opening up several instances of the same program often results in more than ...
In computing and computer science, a processor or processing unit is an electrical component (digital circuit) that performs operations on an external data source, usually memory or some other data stream. [1]
A common trait observed among processes associated with most computer programs is that they alternate between CPU cycles and I/O cycles. For the portion of the time required for CPU cycles, the process is being executed and is occupying the CPU. During the time required for I/O cycles, the process is not using the processor.
GPGPU—General-Purpose Computing on Graphics Processing Units; GPIB—General-Purpose Instrumentation Bus; GPL—General Public License; GPL—General-Purpose Language; GPRS—General Packet Radio Service; GPT—GUID Partition Table; GPU—Graphics Processing Unit; GRUB—Grand Unified Boot-Loader; GERAN—GSM EDGE Radio Access Network
A computer network on a single semiconductor chip, connecting processing elements, fixed-function hardware, or even memories and caches. Increasingly common in system on a chip designs. non-uniform memory access (NUMA) non-volatile memory memory that can retain the stored data even when not powered, as opposed to volatile memory.
The "central processing unit" term has been in use since as early as 1955. [12] [13] Since the term "CPU" is generally defined as a device for software (computer program) execution, the earliest devices that could rightly be called CPUs came with the advent of the stored-program computer.
The computer industry has used the term "central processing unit" at least since the early 1960s. [37] Traditionally, the term "CPU" refers to a processor, more specifically to its processing unit and control unit (CU), distinguishing these core elements of a computer from external components such as main memory and I/O circuitry. [38] character
The term processing refers to automated (or mechanized) processing, as opposed to the same manipulation done manually. Text processing involves computer commands which invoke content, content changes, and cursor movement, for example to search and replace; format; generate a processed report of the content of, or; filter a file or report of a ...