In computing, input/output (I/O, or informally io or IO) 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 and 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. Dec 30, · Try this amazing Input And Output Devices Basic Exam: Quiz! quiz which has been attempted times by avid quiz takers. Also explore over 18 similar quizzes in this category.
Such devices how to remove henna tattoo fast up the peripheral equipment of modern digital computer systems. Peripherals are commonly divided into three kinds: input devices, output devices, and storage devices which partake of the characteristics of the first two.
An input device converts incoming data and instructions into a pattern of how to find area and volume signals in binary code that are comprehensible to a digital computer. An output device reverses the process, translating the digitized signals into a form intelligible to the user. At one time punched-card and paper-tape readers were extensively used for inputting, but these have now been supplanted by more efficient devices.
Input devices include typewriter-like keyboards; handheld devices such as the mousetrackball, joystick, trackpad, and special pen with pressure-sensitive pad; microphones, webcams, and digital cameras.
They also include sensors that provide information about their environment— temperaturepressureand so forth—to a computer. Another direct-entry mechanism is the optical laser scanner e. Output equipment includes video display terminalsink-jet and laser printers, loudspeakers, headphones, and devices such as flow valves that control machinery, often in response to computer processing of sensor input data.
Some devices, such as video display terminals and USB hubs, may provide both input and output. Other examples are devices that enable the transmission and reception of data between computers—e. Even devices such as smartphonestablet computersand wearable devices like fitness trackers and smartwatches can be considered as peripherals, albeit ones that can function independently.
Various standards for connecting peripherals to computers exist. For example, serial advanced technology attachment SATA is the most common interface, or busfor magnetic disk drives. A bus also known as a port can be either serial or paralleldepending on whether the data path carries one how to improve work efficiency at a time serial or many at once parallel. Serial connections, which use what are output and input devices few wires, are generally simpler than parallel ade.
Universal serial bus USB is a common serial bus. Peripheral device. Additional Info. More About Contributors Article History. Home Technology Computers Peripheral device computer inpur. Print Cite verified Cite. While every effort has been made to follow citation oitput rules, there may be some discrepancies. Please refer to the appropriate style manual or other sources if you have any questions.
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Subscribe Now. Flash-memory drive with USB on a laptop computer. Learn More in these related Britannica articles:. Computer peripherals are devices used to input information and instructions into a computer for storage or processing and to output the processed data. In addition, devices that enable the transmission and reception of data between onput are often classified as peripherals.
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GCSE Computer Science
Let us first discuss the exact definition of an input and output device: Input Device Definition: A piece of equipment/hardware which helps us enter data into a computer is called an input device. For example keyboard, mouse, etc. Output Device Definition: A piece of equipment/hardware which gives out the result of the entered input, once it is processed (i.e. converts data from machine. Audio Stream Input/Output (ASIO) is a computer sound card driver protocol for digital audio specified by Steinberg, providing a low-latency and high fidelity interface between a software application and a computer's sound usloveescort.coms Microsoft's DirectSound is commonly used as an intermediary signal path for non-professional users, ASIO allows musicians and sound engineers to access external. Aug 29, · The terms “input” and “output” are used both as verbs to describe the process of entering or displaying the data, and as nouns referring to the data itself entered into or displayed by the computer. Below we discuss the variety of peripheral devices used for computer input and output.
Computer output devices receive information from the computer, and carry data that has been processed by the computer to the user. Output devices provide data in myriad different forms, some of which include audio, visual, and hard copy media.
The devices are usually used for display, projection, or for physical reproduction. Monitors and printers are two of the most commonly-known output devices used with a computer.
Computer output devices are all peripheral hardware, and are connected to a computer by cables, or by wireless networking. A computer can still function without an output device. There is no indicator of errors, nor of the need for additional input. Monitor — This is the most common computer output device.
It creates a visual display by the use of which users can view processed data. Monitors come in various sizes and resolutions. All monitors depend on a video card, which is positioned either on the computer motherboard or in a special expansion slot. The video card sorts out the computer data into image details that the monitors can then show. Printer — this device generates a hard copy version of processed data, like documents and photographs. The computer transmits the image data to the printer, which then physically recreates the image, typically on paper.
Speakers — speakers are attached to computers to facilitate the output of sound; sound cards are required in the computer for speakers to function.
The different kinds of speakers range from simple, two-speaker output devices right the way up to surround-sound multi-channel units.
Headset — this is a combination of speakers and microphone. It is mostly used by gamers, and is also a great tool for communicating with family and friends over the internet using some VOIP program or other. Projector — this is a display device that projects a computer-created image onto another surface: usually some sort of whiteboard or wall. The computer transmits the image data to its video card, which then sends the video image to the projector. It is most often used for presentations, or for viewing videos.
Plotter — this generates a hard copy of a digitally depicted design. The design is sent to the plotter through a graphics card, and the design is formed by using a pen.
It is generally used with engineering applications, and essentially draws a given image using a series of straight lines. The computer transmits data to the drive, where it is saved and can be later accessed. CDs and DVDs are two kinds of optical disc which save data in a digital format. A floppy disk is a magnetic storage device. A layer of magnetised material is placed within a proactive plastic casing. The computer then embeds the data into the magnetized material, by using a writing head.
GCSE Output Devices Resources years An editable PowerPoint lesson presentation Editable revision handouts A glossary which covers the key terminologies of the module Topic mindmaps for visualising the key concepts Printable flashcards to help students engage active recall and confidence-based repetition A quiz with accompanying answer key to test knowledge and understanding of the module View GCSE Output Devices Resources.
A-Level Output Devices Resources years An editable PowerPoint lesson presentation Editable revision handouts A glossary which covers the key terminologies of the module Topic mindmaps for visualising the key concepts Printable flashcards to help students engage active recall and confidence-based repetition A quiz with accompanying answer key to test knowledge and understanding of the module View A-Level Output Devices Resources.
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