Input And Output Devices is a computer term which is used for the devices which is used in computer for communicating with each other. There are some devices in computer which is used for giving command to computer or devices which are used to instruct the computer to do something is called Input Devices of computer. There are also some devices which are used to display the output of the given command, such devices are called Output devices of computer.
In simple words, computer devices which are used to give commands to computer are called Input Devices and computer devices which are used to display the output is called Output Devices.
Some of the examples of input and output devices are Keyboard, Mouse, Scanner, Monitor, Printer, Speakers, Headphones, Webcam, Light Pen, Pen-Drive etc. Here, example of Input Devices are Keyboard, Mouse, Scanner. By using these devices we use to give commands to computer. Examples of Output Devices are Monitor, Webcam, Speakers. By using these devices we use to take output from computer. That's why, we call these devices as computer input and out devices of computer.
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| Input And Output Devices |
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| Input And Output Devices |
In computing, Input And Output Devices Of Computer, input/output or 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 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.
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| Computer Output Device Printer |
Input And Output Devices Of Computer, Note that 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.
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| Input Devices Of Computer |
In computer architecture, the combination of the CPU and main memory, to which the CPU can read or write directly using individual instructions, is considered the brain of a computer. Any transfer of information to or from the CPU/memory combo, for example by reading data from a disk drive, is considered I/O. The CPU and its supporting circuitry may provide memory-mapped I/O that is used in low-level computer programming, such as in the implementation of device drivers, or may provide access to I/O channels. An I/O algorithm is one designed to exploit locality and perform efficiently when exchanging data with a secondary storage device, such as a disk drive.
Input And Output Devices Of Computer, Input/output device, also known as computer peripheral, any of various devices (including sensors) used to enter information and instructions into a computer for storage or processing and to deliver the processed data to a human operator or, in some cases, a machine controlled by the computer. Such devices make up the peripheral equipment of modern digital computer systems.
Input Device, An input device converts incoming data and instructions into a pattern of electrical 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 mouse, trackball, joystick, and special pen with pressure-sensitive pad; and microphones. They also include sensors that provide information about their environment—temperature, pressure, and so forth—to a computer. Another direct-entry mechanism is the optical laser scanner (e.g., scanners used with point-of-sale terminals in retail stores) that can read bar-coded data or optical character fonts. Output equipment includes video display terminals (either cathode-ray tubes or liquid crystal displays), ink-jet and laser printers, loudspeakers, 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, may provide both input and output. Other examples are devices that enable the transmission and reception of data between computers—e.g., modems and network interfaces. Most auxiliary storage devices—as, for example, magnetic tape, magnetic disk drives, and certain types of optical compact discs—also double as input/output devices (see computer memory).
Various standards for connecting peripherals to computers exist. For example, integrated drive electronics (IDE) and enhanced integrated drive electronics (EIDE) are common interfaces, or buses, for magnetic disk drives. A bus (also known as a port) can be either serial or parallel, depending on whether the data path carries one bit at a time (serial) or many at once (parallel). Serial connections, which use relatively few wires, are generally simpler and slower than parallel connections. Universal serial bus (USB) is a common serial bus. A common example of a parallel bus is the small computer systems interface, or SCSI, bus.
Input And Output Devices - An input is data that a computer receives. An output is data that a computer sends. Computers only work with digital information. Any input that a computer receives must be digitized. Often data has to be converted back to an analogue format when it's output, for example the sound from a computer's speakers.