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(CPU): A computer embedded in a communications system.
Note 1: An example of a CPU is the message data processor of a DDN switching center. (188)
Note 2: CPU is also an abbreviation for central processing unit of a computer.
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1. In analog computing, a functional unit that compares two analog variables and indicates the result of that comparison.
2. A device that compares two items of data and indicates the result of that comparison.
3. A device for determining the dissimilarity of two items such as two pulse patterns or words.
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1. Capability of two or more items or components of equipment or material to exist or function in the same system or environment without mutual interference. [JP1] (188)
2. In computing, the ability to execute a given program on different types of computers without modification of the program or the computers.
3. The capability that allows the substitution of one subsystem (storage facility), or of one functional unit (e.g. , hardware, software), for the originally designated system or functional unit in a relatively transparent manner, without loss of information and without the introduction of errors.
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1. A device that accepts data, processes the data in accordance with a stored program, generates results, and usually consists of input, output, storage, arithmetic, logic, and control units. (188)
2. A functional unit that can perform substantial computation, including numerous arithmetic operations or logic operations, without human intervention during a run.
Note 1: This definition, approved by the Customs Council, distinguishes a computer from similar devices, such as hand-held calculators and certain types of control devices.
Note 2: Computers have been loosely classified into microcomputers, minicomputers, and main-frame computers, based on their size. These distinctions are rapidly disappearing as the capabilities of even the smaller units have increased. Microcomputers now are usually more powerful and versatile than the minicomputers and the main-frame computers were a few years ago.
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Of a computer, the physical configuration, logical structure, formats, protocols, and operational sequences for processing data, controlling the configuration, and controlling the operations. Note: Computer architecture may also include word lengths, instruction codes, and the interrelationships among the main parts of a computer or group of computers.
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A functional unit, consisting of one or more computers and associated software, that (a) uses common storage for all or part of a program and also for all or part of the data necessary for the execution of the program, (b) executes user-written or user-designated programs, and (c) performs user-designated data manipulation, including arithmetic and logic operations. Note: A computer system may be a stand-alone system or may consist of several interconnected systems. Synonyms ADP system, computing system.
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Abbreviation for central processing unit . 1. The portion of a computer that includes circuits controlling the interpretation and execution of instructions. (188) 2. The portion of a computer that executes programmed instructions, performs arithmetic and logical operations on data, and controls input/output functions. Synonym central processor. 3. Abbreviation for communications processor unit. The portion of a digital communications switch that executes programmed instructions, performs arithmetic and logical operations on signals, and controls input/output functions.
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