Difference between revisions of "Input/output"
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In [[computing]], '''input/output''' ('''I/O''', '''io''', '''IO''', etc.) is the communication between an information processing system (such as a [[computer]]) and the outside world, possibly a human or another information processing system. | In [[computing]], '''input/output''' ('''I/O''', '''io''', '''IO''', etc.) is the communication between an information processing system (such as a [[computer]]) and the outside world, possibly a human or another information processing system. | ||
| − | Inputs are the signals or data received by the system | + | * [Input (computing)|Inputs]] are the signals or data received by the system. |
| + | * [[Output (computing)|outputs]] are the signals or data sent from it. | ||
The term can also be used as part of an action; to "perform I/O" is to perform an input or output operation. | The term can also be used as part of an action; to "perform I/O" is to perform an input or output operation. | ||
| Line 16: | Line 17: | ||
Mice and keyboards take physical movements that the human user outputs and convert them into input signals that a computer can understand; the output from these devices is the computer's input. Similarly, printers and monitors take signals that a computer outputs as input, and they convert these signals into a representation that human users can understand. From the human user's perspective, the process of reading or seeing these representations is receiving input; this type of interaction between computers and humans is studied in the field of human–computer interaction. | Mice and keyboards take physical movements that the human user outputs and convert them into input signals that a computer can understand; the output from these devices is the computer's input. Similarly, printers and monitors take signals that a computer outputs as input, and they convert these signals into a representation that human users can understand. From the human user's perspective, the process of reading or seeing these representations is receiving input; this type of interaction between computers and humans is studied in the field of human–computer interaction. | ||
| + | |||
| + | == See also == | ||
| + | |||
| + | * [[Feedback]] | ||
| + | * [[Input (computing)]] | ||
| + | * [[Output (computing)]] | ||
== External links == | == External links == | ||
* [http://en.wikipedia.org/wiki/Input/output Input/output] @ Wikipedia | * [http://en.wikipedia.org/wiki/Input/output Input/output] @ Wikipedia | ||
Revision as of 07:42, 12 August 2015
In computing, input/output (I/O, io, IO, etc.) is the communication between an information processing system (such as a computer) and the outside world, possibly a human or another information processing system.
- [Input (computing)|Inputs]] are the signals or data received by the system.
- outputs are the signals or data sent from it.
The term can also be used as part of an action; to "perform I/O" is to perform an input or output operation.
I/O devices are used by a human (or other system) to communicate with a computer.
For instance, a keyboard or mouse is an input device for a computer, while monitors and printers are output devices.
Devices for communication between computers, such as modems and network cards, typically perform both input and output operations.
Duality of input/output relationship
The designation of a device as either input or output depends on perspective.
Mice and keyboards take physical movements that the human user outputs and convert them into input signals that a computer can understand; the output from these devices is the computer's input. Similarly, printers and monitors take signals that a computer outputs as input, and they convert these signals into a representation that human users can understand. From the human user's perspective, the process of reading or seeing these representations is receiving input; this type of interaction between computers and humans is studied in the field of human–computer interaction.
See also
External links
- Input/output @ Wikipedia
