Output devices in all applications allow you to display, print, or otherwise present the results of your program to anyone, period, who is not, in fact, inside the memory core of the computer. What are graphical input and output devices in a computer. The end product of the computer graphics is a picture it may be a business graph, drawing, and engineering. Magnetic ink card readermicr micr input device is generally used in banks because of a large number of cheques to be processed every day. They are locators and selectors a joystick has two potentiometers, they have been attached to a single lever. Hewlett packard and tektronix desksized flatbed plotters 1959 ibm selectric printer 1961 9pivoting typeball 9different fonts 914. Discuss in detail how these devices work together to produce information. It is an electromechanical device, which accepts data from a computer and translates them into form understand by users. A flatbed scanner works like a copy machine except that it creates a file of the document rather than a paper copy. Thats true of every application, from games and the internet to word processing and databases.
Text consists of characters letters, numbers, punctuation marks, or any other symbol requiring one byte of computer storage space that are used to create words, sentences, and paragraphs. The data entered through input device can be some text, some graphical image or symbol, sound etc, depending on the form of the raw data the various input devices are available. Now a day computer is one of the most important field for every examinations. Following on from lesson 2, this lesson covers common input and output devices, including computer accessibility for disabled users. A scanner is a lightsensing input device that converts printed text and graphics into a digital form that can be further processed by the computer. Mcqs on input and output devices gk objective question answer exam question answer for competitive exam of govt jobs. Calcomp 560, first computer graphics output devices sold 91970. Understanding barcodes this ebook gives an overview of product codes. Example glgraphics library system on silicon graphics equipment. An input devices converts the data and instructions into binary form that computer can understand. Input output devices list with their functions pcguide4u. Inputoutput devices are required for users to communicate with the computer.
Thus, a computer must have a system to receive information from the outside world and must be able to communicate results to the external world. Our new crystalgraphics chart and diagram slides for powerpoint is a collection of over impressively designed datadriven chart and editable diagram s guaranteed to impress any audience. Data that has been processed into a useful form, called information p. The joystick is a vertical stick which moves the graphic cursor in a direction the stick is. Mcq input and output device of computer with answers pdf. A graphic tablet as digitizer is used for doing fine works of drawing and image manipulation applications. Output devices of computer input output system in computer architecture and organizatkion wine output is measured as an index output which is hypothesized to be influenced by two inputs. Computer graphics notes pdf cg notes pdf smartzworld. Projectors are often used in meetings and presentations so that everyone in the room can view the presentation. The distinction between output devices and input devices becomes even more blurred in the real world. If you liked this video, computer input devices ppt. Computer inputoutput ports and interfaces 1 terms and abbreviations. Any device has to be connected to the cpu to receive or send information.
Mouse, digitizer, digital camera, laser measurment device, etc. Points and lines, line drawing algorithms, midpoint circle and ellipse algorithms. Output can be text, numeric data, line, polygon, and other objects. Monitor and the printer are the commonly used output devices. These examples of output devices also include inputoutput devices. Video input devices are used to entering full motion video recording into a computer. This document contains all input as well as output devices of the computer. Input devices various hardware devices have been developed to enable the user to interact in the more natural manner. The input devices are the hardware that is used to transfer transfers input to the computer. The joystick is a vertical stick which moves the graphic cursor in a direction the. A touchpad most commonly found on computer laptops computer brand doesnt matter. Using a computer may seem an easy task because of the. Graphic communication st pauls rc academy computer hardware cdt department. Input and output devices used for computer graphics.
A touchpad or trackpad is a kind of input device that has a limited area wherein you can point, scroll, click and swipe. An output device works by receiving a signal from the computer and using that signal to perform a task to display the output. There are various types of input device by which a user can ask computer to solve their query or processes. For example, below is a basic list of steps of how an output device works. Pdf computer input and output devices ingamule siraji. In c input and output are done using, printf, scanf, getchar, and putchar. Basically, any device that converts analog information to a digital format that a computer can read is a graphical input device.
Devices input devices keyboard mouse scanner joystick microphone digital. They can be used by the computer to create a picture of whatever the camera had been pointed at. On a computer keyboard input device, if you type h, it sends inputs a signal to the computer. Input devices input is any data or instructions entered into the memory of a computer. An input device is any hardware component that allows a user to enter data and instructions into a computer. Cpu controls all the connected input and output devices. The devices which are used to display the results or information are called output devices.
These inputoutput devices are also known as peripherals since they surround the cpu and memory of a computer system. Input and output devices 3 lecture outline output devices visual displays audio output tactile and haptic output input devices discrete event devices continuous event devices combination devices speech input the first part of the lecture will describe a number of output devices that stimulate the. Output devices output devices are used to receive information from the computer either in softcopy or hard copy. Clay reacts to the sculptors fingers yet also provides feedback through the curvature and texture of its surface. Introduction, application areas of computer graphics, overview of graphics systems, videodisplay devices, rasterscan systems, random scan systems, graphics monitors and work stations and input devices. Inputs are the signals or data received by the system, and outputs are the signals or data sent from it. Pdf interaction styles and inputoutput devices researchgate. Inputoutput devices and interaction department of computer. Computer devices computer input and output devices 992019 designed by. A computer receives incoming data, processes them and produces an output.
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. A general graphics programming package provides an extensive set of graphics functions that can be used in highlevel programming languages. A sheet of paper can be used to both record ideas input and display them output. Includes teachers powerpoint, activity, worksheet, and plenary. Getting the right input devices for your computer system can make a world of difference in your computers performance and can improve the quality of your time spent at the screen. The input data form may be text, sound, video, artwork etc. Digitizer is also known as tablet or graphics tablet because it converts graphics and pictorial data into binary inputs. Output devices monitor printer audio output projector 16. The microphone is used for various applications like adding sound to a multimedia presentation or for mixing music.
Input devices as well as output devices are a neccessity in order to ensure that data is. For example, a higherquality graphics card can be plugged in, and the built. It forms images from tiny dots, called pixels that are arranged in a rectangular form. What is the purpose of output devices in computer graphics. It forms images from tiny dots, called pixels that are. Touchpad allows to use all the features as you do with a computer mouse trackpoint. In this section you can learn about how the various devices used to facilitate basic pc input and output. In computing, inputoutput refers to the communication between aninformation processing system such as a computer, and the outside world.
The longrange light pen as a headbased controller usercomputer interface. In computer graphics, the use of logical devices is slightly more complex. In today life, computer graphics has now become a common element in user interfaces, t. Difference between input devices and output devices. An input device are mechanical device which helps user to input the data in to your computer machine. This is the most common output device connected with the computer to display the processed information. Pdf assinment find, read and cite all the research you need on researchgate. This transformation is performed by input interface. The data can be in the form of text, graphics, sound, and text. In simple terms, input devices bring information into the computer and output devices bring information out of a computer system. Additional inputoutput can be added by plugging in controller cards into the motherboards pci or pci express slots.
For graphical output, the routines in the computer convert the x,y position, plus the r,g,b color sequences to points on a monitor. Graphics software two classifications general programming package specialpurpose application package. Output device display data from the memory of the computer. Following are few of the important output devices which are used in a computer. Inputoutput devices and interaction techniques 2004. Input output devices printer computing computer monitor. It only processes the information given by the input devices and sends the result to the output devices. Ingamule siraji 1 a computer is an electronic device that works. Input output devices software eltima serial port terminal v. Pdf input output storages devices in computers researchgate. Some types of output are text, graphics, tactile, audio, and video. Microphone is an input device to input sound that is then stored in digital form. Chart and diagram slides for powerpoint beautifully designed chart and diagram s for powerpoint with visually stunning graphics and animation effects.
For monitors and sound cards please refer to the multimedia section. The distinction between output devices and input devices. Monitors graphic plotter printer monitors monitors, commonly called as visual display unit vdu, are the main output device of a computer. A logical device is characterized by its highlevel interface with the user program, rather than by its physical characteristics. Printer is the most important output device, which is used to print data on paper. The following is a list of the most common input devices which are nowadays found in a computer system. Images photos vector graphics illustrations videos. Input and output devices department of computer science. Devices input and output unit 4 input output devices. Input output devices software free download input output.
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