Inputoutput devices constitute a major part of a computer system. Computer inputoutput ports and interfaces 1 terms and abbreviations. An input device is a piece of computer hardware equipment used to provide data. Input output interface an overview sciencedirect topics. In addition, you use output devices to receive information that you can read, see or hear, they make use of components like sound cards, video cards. You must be using a mouse, keyboard, touchpad, monitor, printers, speaker, scanners, etc. Input devices data glovepolhemus a modern attempt to provide the user with more degrees of freedom common in virtual reality applications polyhemus can provide six degrees of freedom rotation and translation head mounted display although primary a display device, it can also track position and orientation like polhemus space ball six degrees of freedom sphere. In my last post i have shared about the following job recruitment questions on basic computer technology and internetjob recruitment questions on basic computer technology and internet part1. Output devices allow us to receive information from the computer. Monitors graphic plotter printer monitors monitors, commonly called as visual display unit vdu, are the main output device of a computer. Without any input devices, a computer would only be a display device and not allow users to interact with it. The inputoutput system 4 module 2 22 input interfaces a micrologix uses input interfaces to connect with discrete input devices.
Magnetic ink card readermicr micr input device is generally used in banks because of a large number of cheques to be processed every day. Input devices as well as output devices are a neccessity in order to ensure that data. Sound card plays contents of digitized recordings, speakers attached to sound card. A central processing unit cpu, also referred to as a central processor unit, is the hardware within a computer that carries out the instructions of a computer program by performing the basic arithmetical, logical, and inputoutput operations of the system. Now a day computer is one of the most important field for every examinations.
The functions of input and output device are mainly to help in communication. The most common of all input devices is the keyboard. Input output devices printer computing computer monitor scribd. This is unlike input devices that lets you send data out of the system. Inputoutput devices and interaction department of computer. Input means to provide the program with some data to be used in the program and output means to display data on screen or write the data to a printer or a file c programming language provides many builtin functions to read any given input and to display data on screen when there is a need to output the result. Input and output devices bangladesh open university. What are 10 input devices and their functions answers. It forms images from tiny dots, called pixels that are. Heres a look at output devices such as monitors, speakers, printers and ebooks. Projectors are often used in meetings and presentations so that everyone in the room can view the presentation. Fax machine know more about all in detail, click here input output devices.
Input devices output devices keyboard mouse joystick scanner light pen touch screen monitor lcd printer plotter. It gives a detailed listing of the various types of input devices and the output devise. Because of the high cost of ocr devices, they are uneconomic unless a substantial number of documents are to be processed each day. Computer component and their functions identifying specialized inputoutput devices. Examples of io devices are cd drives, dvd drives, usb drives. The computer transmits data to the drive, where it is saved and can be later accessed.
Input devices as well as output devices are a neccessity in order to ensure that data is entered into a computer to be processed and the results output. For example, the image shows an inkjet printer, an output device that can make a hard copy of anything shown on the monitor. Following are few of the important output devices which are used in a computer. An output device is any peripheral that receives data from a computer, usually for display, projection, or physical reproduction. Input devices input devices any peripheral piece of computer hardware equipment used to provide data and control signals to a computer. An input device is any hardware component that allows a user to enter data and instructions into a computer. Jacob, tufts university colin ware, university of new hampshire introduction the computing literature often draws a sharp distinction between input and output. Input devices a keyboard it is a text base input device that allows the user to input alphabets, numbers and other characters. Microphone is an input device to input sound that is then stored in digital form. Output devices examples of output device printer monitor. Pdf input output storages devices in computers researchgate. It is also a pointing device by which users touch areas of the screen with their fingers to issue commands. Devices input and output unit 4 input output devices. The input devices are the hardware that is used to transfer transfers input to the computer.
C inputoutput functions printf, scanf, putchar, getchar. An input device is any hardware component that allows you to enter data and instructions into a computer. The data can be in the form of text, graphics, sound, and text. Amazing 20 examples output devices and their functions gonewson. Input and output devices of computer computer notes. Describe the purposes of scanners and readers and list some. Chapter 4 input and output oakton community college. Output devices of computer receive data from the system which it shows to you. List of input devices, output devices and both input. Many of these are less complex versions of io devices that have been available for larger computer systems. Inputoutput devices dont only produce output, but can also be used as storage and input devices. List several different pointing devices and describe their functions. Job interview questions on basic computer technology and internet part2. Five widely used input devices are the keyboard, mouse, microphone,scanner,and web cam.
Output devices provide data in myriad different forms, some of which include audio, visual, and hard copy media. Computer output devices are used to provide information for a user in different forms. Mcqs on input and output devices gk objective question answer exam question answer for competitive exam of govt jobs. Without io devices, a user cannot communicate with the computer. Both output and input devices are examples of auxiliary or peripheral devices. A cpu is responsible for processing the instructions and the devices are responsible in outputting the processed information in different. In this article, you will find 20 examples output devices and their functions. Output devices projector an output device that can take the display of a computer screen and project a large version of it onto a flat surface. Identifying specialized input devices game controllers digital cameras. Identifying input and output devices learn with flashcards, games, and more for free.
Input and output devices 77 c 6 discrepancies figure 4. An input devices converts the data and instructions into binary form that computer can understand. The microphone is used for various applications like adding sound to a multimedia presentation or for mixing music. Input output devices list with their functions pcguide4u. Pdf computer input and output devices ingamule siraji.
The audio output is the ability of the computer to output sound. The chapter has given an introduction to the inputoutput devices. Obcr is an input device which is used for reading bar coded data from any item and convert them into electrical pulses for further processing by computer. Input and output devices introduction the unit 4 presents the information of input and output devices. Mcq input and output device of computer with answers pdf. About input and output devices some examples of input and output devices lesson 2 input and output devices input devices allow us to send information to the computer. Discuss how different io devices affect interface design. In this unit we shall discuss something about inputoutput devices and their functions. Apart from alphabet and numeral keys, it has other function keys for performing different functions. Amazing 20 examples output devices and their functions. There are different components in the computer system.
Monitors and printers are two of the most commonly used output devices used with a computer. A number of inputoutput devices are used with many types of microcomputers. The inputs might thus be from switches, as illustrated in figure 1. Input devices input is any data or instructions entered into the memory of a computer. For example, one could use a mouse to select a command by using a popup menu, a fixed. Peripheral devices that perform inputoutput functions between the operator and the computer are discussed in lesson 3, and lesson 4 covers the auxiliary storage devices that hold information for the cen tral processor to use at a later time. Input is usually given by clicking the mouse or typing on the keyboard. Computer output devices receive information from the computer, and carry data that has been processed by the computer to the user. The input and output sections are where the processor receives information from external devices and communicates information to external devices.
Explain the purpose of a computer keyboard and the types of keyboards widely used today. Still and video scanners graphics tablets bar code reader radio frequency idrfid touch screen sensors and probes. On analyzing a computer, we see that it has various devices, e. The following is a list of the most common input devices which are nowadays found in a computer system. Few of them comes under input devices and some of them comes under output devices. In the computer industry, the terms computer and cpu are often. Csca0101 computing basics 23 input devices key types arrow keys the arrow keys are four directional arrow keys that allow the user to move their cursor and position on a page. Inputoutput devices and interaction techniques ken hinckley, microsoft research robert j. In this lecture we will discuss the various input and output devices. Hereby, providing you input output devices list related to computers and their brief description.
Here i am going to share you about list of basic input devices, output devices and both inputoutput devices. The devices are usually used for display, projection. So dear reader i have provided top expected gk questions from input and output device of computer. Due to their large size, low light output and the frequent need to converge and align the images projected from each of. Character reads compare the digitized matrix of an unknown character against a stored set of templates. Data coded in the form of small lines are known as barcodes. Color monitors can display anywhere from 16 to over 1 million different colors. There may be several different ways of accomplishing the same task. Barcode represents alphanumeric data by the combination of adjacent vertical lines by varying their width and space between them. Keyboards also have extra function keys which can carry out different. This transformation is performed by input interface.
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