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Input3 is the term denoting either an entrance or changes which are inserted into a system and which activate/modify a process. It is an abstract concept, used in the modeling, system(s) design and system(s) exploitation. It is usually connected with other terms, e.g., input field, input variable, input parameter, input value, input signal, input device and input file. In semiotics, denotation is the surface or literal meaning encoded to a signifier, and the definition most likely to appear in a dictionary. ...
System (from Latin systēma, in turn from Greek systēma) is a set of entities, real or abstract, comprising a whole where each component interacts with or is related to at least one other component and they all serve a common objective. ...
Illustration of a physical process: a geyser in action. Process (lat. ...
An abstract model (or conceptual model) is a theoretical construct that represents something, with a set of variables and a set of logical and quantitative relationships between them. ...
An input device is a hardware mechanism that transforms information in the external world for consumption by a computer. ...
A file format is a particular way to encode information for storage in a computer file. ...
From the most general systemics perspective, input is a subjective concept and depends on how the system is used. In such sense, the same system can have different inputs in different applications. Systems theory or general systems theory or systemics is an interdisciplinary field which studies systems as a whole. ...
In the case of a process description/model, the concept input is closely connected with the concept output. Here, what enters is called input and what exits is called output. // Information processing In information processing, output is the process of transmitting information by an object (verb usage). ...
Example: For an abstract system A(x,y,p), where x,y are variables and p is a parameter, x may denote input (variable) and y may denote the output for a process: y = f(p,x), but, for another goal/(system application), the system A can be the carrier of a process x = g(p,y), where y is an input and x is an output.[citation needed] Look up goal in Wiktionary, the free dictionary. ...
In general, a carrier is a system or process with a specific property or is attributed of something (in physical or in abstract sense). ...
Usually, in the modeling of a problem/process, input are these variables which are known and output are those unknown to us yet.
In recognition that the quality of the input can be crucial to the value of the output, a famous saying teaches us "Garbage IN, Garbage OUT" (GIGO). http://www.google.com/search?hl=en&q=define%3A+GIGO&btnG=Google+Search
In different contexts, input has several more concrete domain-dependent meanings.
Information processing
In information processing, input3 refers to either information received or the process of receiving it; In general, information processing is the changing (processing) of information in any manner detectable by an observer. ...
// Human–computer interaction (HCI), alternatively man–machine interaction (MMI) or computer–human interaction (CHI), is the study of interaction between people (users) and computers. ...
A computer program is a collection of instructions that describe a task, or set of tasks, to be carried out by a computer. ...
The user interface is the part of a system exposed to users. ...
In computing, a command is a directive to a computer program acting as an interpreter of some kind, in order to perform a specific task. ...
Operating a mechanical 1: Pulling the mouse turns the ball. ...
For the scientific and engineering discipline studying computer networks, see Computer networking. ...
Disk Drive is the afternoon show on CBC Radio Two. ...
Control theory In control theory, the inputs of a system are the signals that can be observed or affected that feed into the system. Specifically, inputs are differentiated from states. In engineering and mathematics, control theory deals with the behavior of dynamical systems. ...
In control theory, states are what characterize a system. ...
Equity theory In equity theory, inputs are the skills, time, effort, expertise, experience or qualifications that an employee brings to his job. Equity theory. ...
Economic theory In economics, inputs refer to priced or unpriced resources used in a production process, and outputs refer to the priced or unpriced results of that process. Normally, inputs are regarded as costs, and outputs as products. Outputs may be valued gross (before deduction of costs from sales) or net (after deduction of costs from sales). Input-output economics was popularised by the economist Wassily Leontief who devised an ingenious system of input and output accounts and matrices to analyse the flows of goods and services between different sectors of a national economy. In national accounts an attempt is made to value national inputs and outputs according to consistent valuation principles, to measure the creation and distribution of wealth. Face-to-face trading interactions on the New York Stock Exchange trading floor. ...
Input-output economics was developed by Wassily Leontief. ...
Wassily Leontief (August 5, 1905, Munich, Germany – February 5, 1999, New York)[1], was an economist notable for his research on how changes in one economic sector may have an effect on other sectors. ...
In mathematics, a matrix (plural matrices) is a rectangular table of numbers or, more generally, a table consisting of abstract quantities that can be added and multiplied. ...
Measures of national income and output are used in economics to estimate the value of goods and services produced in an economy. ...
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