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In computing, input/output (I/O, i/o, or informally io or IO) is the communication between an information processing system, such as a computer, and the outside world, such as another computer system, peripherals, or a human operator. Inputs are the signals or data received by the system and outputs are the signals or data sent from it.
A display device is the most common form of output device which presents output visually on computer screen. The output appears temporarily on the screen and can easily be altered or erased. With all-in-one PCs, notebook computers, hand held PCs and other devices; the term display screen is used for the display device.
HPC—High-Performance Computing; HPFS—High Performance File System; HSDPA—High-Speed Downlink Packet Access; HTC—High-Throughput Computing; HSM—Hierarchical Storage Management; HT—Hyper Threading; HTM—Hierarchical Temporal Memory; HTML—Hypertext Markup Language; HTTP—Hypertext Transfer Protocol; HTTPd—Hypertext Transport ...
Personal computer users who are not software developers or coders often prefer GUIs for both input and output; GUIs are supported by most personal computers. [129] The software to support GUIs is more complex than a command line for input and plain text output. Plain text output is often preferred by programmers, and is easy to support. [130]
An output state of a system, see state (computer science) Output (economics), the amount of goods and services produced Gross output in economics, the value of net output or GDP plus intermediate consumption; Net output in economics, the gross revenue from production less the value of goods and services; Power (physics) or Work (physics) output ...
The simplest system bus has completely separate input data lines, output data lines, and address lines. To reduce cost, most microcomputers have a bidirectional data bus, re-using the same wires for input and output at different times. [20] Some processors use a dedicated wire for each bit of the address bus, data bus, and the control bus.
In computer science, garbage in, garbage out (GIGO) is the concept that flawed, biased or poor quality ("garbage") information or input produces a result or output of similar ("garbage") quality. The adage points to the need to improve data quality in, for example, programming.
More precisely, one may distinguish three types of parameters or parameter modes: input parameter s, output parameters, and input/output parameter s; these are often denoted in, out, and in out or inout. An input argument (the argument to an input parameter) must be a value, such as an initialized variable or literal, and must not be redefined ...