Output devices in computer graphics pdf

It contains well written, well thought and well explained computer science and programming articles, quizzes and practicecompetitive programmingcompany interview questions. Most commonly used output device in a graphics system is a video monitor. Thus, most output devices used by humans are in these categories. Trackballs and space balls are used to accurately draw on the computer. Jan 05, 2017 the devices which are used to display the results or information are called output devices. They are locators and selectors a joystick has two potentiometers, they have been attached to a single lever. Imagebased rendering and lighting lecture notes not available output devices lecture notes not available graphics pipeline and rasterization pdf 2. A new type of output device is been developed these days, known as speech synthesizer, a. If you liked this video, computer input devices ppt, please hit the like button. Some types of output are text, graphics, tactile, audio, and video. From the computer s perspective, an interaction technique involves. Some types of output are text, graphics, tactile, audio, and.

Instead, they require the assistance of a special device to translate data into electrical signals that are compatible with the display hardware. Although there is no general agreement on the exact meaning of the term interaction technique, the most popular definition is from the computer graphics literature. Digitizer can convert a signal from the television or camera into a series of numbers that could be stored in a computer. The size of a monitor is measured in inches diagonally across the screen. 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. The primary output device in a graphics system is a video monitor.

In this case, the computer tells the graphics card what colors to paint at specific points on the monitor. Converts digital output from computer into analog video signal controls how display device produces picture also called graphics card or video adapter p. Monitors, commonly called as visual display unit vdu, are the main output device of a computer. Projectors are often used in meetings and presentations so that everyone in the room can view the presentation. An output devices is a piece of hardware that is used to display objects or output data which has been processed or has been stored in the computer. A plotter is a printer that prints graphics by drawing images with ink pens. This transformation is performed by input interface. Printer is the most important output device, which is used to print data on paper. Growth in computer graphics has led to an increase in demand for hard copy devices. Computer output devices receive information from the computer, and carry data that has been processed by the computer to the user. Digitizer is an input device which converts analog information into digital form. Monitor receives data from a computer output and displays that information as text and images for users to view. Difference between input devices and output devices. The audio output is the ability of the computer to output sound.

You can view the output on the monitor or you can print it on a paper using a printer. A flatbed scanner works like a copy machine except that it creates a file of the document rather than a paper copy. 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. What is the difference between an input and output device. Graphics hardware output devices are those hardware that generates computer graphics and allows them to be shown on a display 3.

Output devices allow us to receive information from the computer. Graphics output hardware devices linkedin slideshare. The following is a list of the most common input devices which are nowadays found in a computer system. Graphic devices are output devices, but their physical characteristics restrict them from taking data as represented in the computer s memory and displaying the data directly. Input devices a keyboard it is a text base input device that allows the user to input alphabets, numbers and other characters. Printers are output devices that convert computer data into printed characters or graphics on paper. Jun 01, 2017 7 most important input devices of computer, namely computer graphics in powerpoint presentation formppt. Pdf input output storages devices in computers researchgate. 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. What are graphical input and output devices in a computer. An output device is an electromechanical device which accepts data from a computer and translates them into a human acceptable form. 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. Output devices in computer graphics pdf 1 basic graphical output devices.

A general graphics programming package provides an extensive set of graphics functions that can be used in highlevel programming languages. As you consider 10 examples of output devices, a plotter stands out due to the fact that it was the first printer made that could print graphics. Computer inputoutput ports and interfaces 1 terms and abbreviations. Feb 10, 2017 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. Mouse, digitizer, digital camera, laser measurment device, etc. Nov 16, 2019 an output device is any peripheral that receives data from a computer, usually for display, projection, or physical reproduction. Input, used to interact with, or send data to the computer mouse, keyboards, etc. Computer graphicsoutput primitive wikibooks, open books.

In computer graphics, the use of logical devices is slightly more complex. The input devices are the hardware that is used to transfer transfers input to the computer. An output device is any device used to send data from a computer to another device or user. Although the technical requirements of both systems overlap, graphic devices use an approach that assumes that every dot. The joystick is a vertical stick which moves the graphic cursor in a direction the. An input device is any hardware component that allows a user to enter data and instructions into a computer. Examples include monitors, projectors, speakers, headphones and printers. Graphical output devices output devices are needed to generate graphical outputs.

The chapter has given an introduction to the inputoutput devices. 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. Be it in user interfaces, or data visualization, motion pictures etc, computer graphics plays an important role. Crt, egaenhanced graphic adaptercgavgasvga monitors, plotters, data matrix, laser printers, films, flat panel devices, video digitizers, scanners, lcd panels, keyboard, joystick, mouse, touch screen, track ball, etc. A logical device is characterized by its highlevel interface with the user program, rather than by its physical characteristics. The space ball and trackball are an input device which is usually used with cad workstations. An interaction technique is the fusion of input and output, consisting of all software and hardware elements, that provides a way for the user to accomplish a task. Chart and diagram slides for powerpoint beautifully designed chart and diagram s for powerpoint with visually stunning graphics and animation effects. There are now many competing products on the market based on technologies suited to differing requirements. Ddas are used for rasterization of lines, triangles and polygons. Inputoutput devices are required for users to communicate with the computer.

The main element of a video monitor is the cathode ray tube crt, shown in the following illustration. Input devices output devices keyboard mouse joystick scanner light pen touch screen monitor lcd printer plotter. A color monitor can display from 16 to over 1 million different colors. Sound card plays contents of digitized recordings, speakers attached to sound card.

Graphics input devices graphics output devices computer graphics p. Monitors and printers are two of the most commonly used output devices used with a computer. Monitors and printers are two of the most commonlyknown output. Video input devices are used to entering full motion video recording into a computer. Using a computer may seem an easy task because of the. For example, the image shows an inkjet printer, an output device that can make a hard copy of anything shown on the monitor. Inputoutput devices and interaction department of computer. The sharpness of the image depends upon the number of pixels. It can also print all kinds of designs made by architects or that of engineers and graphics too. Points and lines, line drawing algorithms, midpoint circle and ellipse algorithms. Digitizer is also known as tablet or graphics tablet because it converts graphics and pictorial data into binary inputs. Nov, 2018 an output device can receive data from another device and generate output with that data, but it cannot send data to another device.

It gives a detailed listing of the various types of input devices and the output devise. Healy university of limerick cs4815 spring 20192020 1 22. The most commonly used display device is the crt monitor. A graphics processor accepts graphics commands from the cpu and executes the graphics commands which may involve drawing into the frame buffer. This differs from text mode output, for which the computer generates horizontal lines of alphanumeric symbols.

The devices which are used to display the results or information are called output devices. The devices are usually used for display, projection, or for physical reproduction. 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. They include printers, plotters and microfilmmicrofiche. It forms images from tiny dots, called pixels that are arranged in a rectangular form. The monitor displays the video and graphics information generated by the computer. Graphics systems block diagram of a crt graphics system in this context we discuss the graphics systems of rasterscan devices. An electron gun at the rear of the tube produce a beam of electrons which is directed towards the. Example gl graphics library system on silicon graphics equipment.

Output devices output devices are used to receive information from the computer either in softcopy or hard copy. Monitor and the printer are the commonly used output devices. Without an output device, you cannot know what processing has been done. Cathode ray tube the primary output device in a graphical system is the video monitor. It can be text, graphics, tactile, audio, and video. Input devices input is any data or instructions entered into the memory of a computer. The data can be in the form of text, graphics, sound, and text. An output device is any piece of computer hardware equipment used to communicate the results of data processing carried out by an information processing system such as a computer which converts the electronically generated information into humanreadable form. Pdf computer input and output devices ingamule siraji. This is the most common output device connected with the computer to display the processed information. Input is usually given by clicking the mouse or typing on the keyboard. An output device is any piece of computer hardware equipment which converts information into humanreadable form.

One or several input devices that capture user input. Crt, flat panel display, raster scan system, random scan system, input and output devices, graphics software and functions, gui. A peripheral is a device that is used to put information into or get information out of the computer. An output device is any peripheral that receives data from a computer, usually for display, projection, or physical reproduction. Input and output devices used for computer graphics. 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. Thanks to advances in computer graphics hardware and algorithms, virtually all new desktop machines available today have sophisticated fullcolor displays with. In today life, computer graphics has now become a common element in user interfaces, t. Monitors graphic plotter printer 992019 designed by. Computer graphics is the creation of pictures with the help of a computer. It can be text, graphics, tactile, audio, and video some of the output devices are visual display units vdu i. Output, which provides output to the user from the computer. Refresh type output devices in computer graphics geeksforgeeks. It is an electromechanical device, which accepts data from a computer and translates them into form understand by users.

There are two kinds of viewing screen used for monitors. 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. A computer graphics can be anything like beautiful scenery, images, terrain, trees, or anything else that we can imagine, however all these computer graphics are made up of the most basic components of computer graphics that are called graphics output primitive or simply primitive. Graphics software two classifications general programming package specialpurpose application package. Output can be text, numeric data, line, polygon, and other objects. It is one of the most commonly used peripheral devices in. Output devices provide data in myriad different forms, some of which include audio, visual, and hard copy media. The process transforms and presents information in a visual form. Computer graphics has become a common element in todays modern world. See more ideas about output device, hardware components and office automation. Output primitives in computer graphics linkedin slideshare. Computer graphics cathode ray tube video display device. A graphic tablet as digitizer is used for doing fine works of drawing and image manipulation applications.

An interaction technique is a way of using a physical input output device to perform a generic task in a human computer. Trackballs and space balls are mainly seen or used for arcade games. See more ideas about output device, liquid crystal display and lcd monitor. Output device display data from the memory of the computer. In c input and output are done using, printf, scanf, getchar, and putchar. Output devices monitor printer audio output projector 16. Cs3162 introduction to computer graphics helena wong, 2000 4 2. Dec 29, 2016 an input devices converts the data and instructions into binary form that computer can understand. Just as words spoken or printed will betray a human heart, so will output devices betray the graphics processing inside the computer. Output primitives points and lines line drawing algorithms dda algorithm bresenhams line algorithm midpoint circle algorithm midpoint ellipse algorithm filled area primitives 2. 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.

An example of computer graphics is the design of pictures and scenes on a computer game. Following are some of the important output devices used in a computer. Sep 09, 2019 the main difference between input devices and output devices is that the devices that are used to get input signals from the user are known as input devices whereas the devices that are used to display the output signals to the user are the output devices. Graphic devices data output through graphic devices on computer systems is made possible through techniques that use video generation modules to display images. Computer graphics 3d transformations with computer graphics tutorial, line generation algorithm, 2d transformation, 3d computer graphics, types of curves, surfaces, computer animation, animation techniques, keyframing, fractals etc. Example glgraphics library system on silicon graphics equipment. A higher velocity beam will penetrate into the green phosphor increasing the green components of the light output by varying the beam potential different combinations of red and green lights can be produced. Lecture notes computer graphics electrical engineering. Computer graphics notes pdf cg notes pdf smartzworld.