The keyboard looks very similar to the keyboards of. Computer graphics is an art of drawing pictures, lines, charts, etc. The following is a list of the most common input devices which are nowadays found in a computer system. Data about the stylus movements are sent to the computer.
Introducing variety of devices that are used for interaction. Input and output devices used for computer graphics. The layout of the keyboard is like that of traditional typewriter, although there are some additional keys provided for performing additional functions. As computers become cheaper and more powerful, the major bottleneck for further progress is not so much the need for better hardware or software as the need for better com. Besides the basic computer, some special devices and software may be required especially for computer graphics. The end product of the computer graphics is a picture it may be a business graph, drawing, and engineering. Input is any data or instructions entered into the memory of a computer. Data, instructions and program that help to perform some processing on computer are called input. Read more of the theory on input devices or sign up to download our gcse computer science resources today. They are locators and selectors a joystick has two potentiometers, they have been attached to a single lever. Output devices plotter the plotter is a computer printer for printing vector graphics plotters are used in applications such as computer aided design such as diagrams, layouts, specification sheets and banners the plotter is capable of producing color drawings in a matter of minutes plotters differ from printers in that they.
An input device is a hardware device that is used to provide input data instructions to a. Example glgraphics library system on silicon graphics equipment. 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 input device is any hardware device that sends data to the computer, without any input devices, a computer would only be a display device and not allow users to interact with it, much like a tv. Since the whole device is not moved, a track ball requires less space than a mouse. Scanner is also a common input device which allows scanning anything such as text, graphic, image, photos etc. Input and interaction cs 537 interactive computer graphics prof. This is a ball which is half inserted and by moving fingers on the ball, the pointer can be moved. The input devices are the hardware that is used to transfer transfers input to the computer. Input devices keyboard one of the primary input devices used with a computer. The task of producing photorealistic images is an extremely complex one, but this is a field that is in great demand because. Jun 18, 2016 input devices of computer input device device. A user presses a key which transfers information to a computer.
Student notes page 1 of 7 k aquilina input devices input is any data or instructions entered into the memory of a computer. Monitors, commonly called as visual display unit vdu, are the main output device of a computer. Similar to an electric typewriter, a keyboard is composed of buttons that create letters, numbers, and symbols, as well as perform other functions. Output devices can include dvd, rendering software packages asked in computer printers. Jan 05, 2017 input devices are used to give data and instructions to the computer. Computer graphics is concerned with producing images and animations or sequences of images using a computer. The following sections provide more indepth information and answers to some of the more frequently asked questions about the keyboard. Input devices were also a very important part of the systems that were evolving during this early part of cg history. The sharpness of the image depends upon the number of pixels.
Input devices o level computer science 2210 prepared by. Graphics standards divide the primitive input devices into the logical classes locator, stroke, valuator, choice, pick, and string. There are two kinds of viewing screen used for monitors. This includes the hardware and software systems used to make these images. Computer graphics is the creation of pictures with the help of a computer. If you have any doubt, please feel free to ask in comments section below. What are different types of input devices with examples. Track ball is an input device that is mostly used in notebook or laptop computer, instead of a mouse. They are divided into two categories 1 manual input devices devices that need human involvement to input data. Input devices are things we use to put information into a computer. An input device is a piece of hardware used to provide data to a computer used for interaction and control.
The image below shows where input dev ices fit into a computer system. An input device helps you to communicate with the computer. For hardware, a special highresolution, color monitor is often demanded and some input tools, e. Flood fill algorithm how to implement fill in paint. 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. In computing, an hyg input device is a piece of faiza computer hardware equipment used to provide data and control signals to an information processing system such as a computer or information appliance.
Fahad khan an input device is a piece of hardware that is used to enter data into a computer. Mouse is a point and click input device with two or three buttons. Following are some of the important input devices which are used in a computer. The term light pen may also refer to a pointing input device utilizing a light that is commonly used during a. It allows input of raw data to the computer for processing. Input and output the computer mouse and the keyboard are both hardware devices that allow you to communicate with the computer. Sep 30, 2019 computer graphics pdf computer graphics book pdf notes starts with the topics covering introduction of computer graphics.
View notes computer graphics notes from computer s c026 at dedan kimathi university of technology. See your article appearing on the geeksforgeeks main page and help other geeks. The user dialog input of graphical data input function interactive picture construction techniques. For example, digitizing graphics tablets that do not have an embedded screen involve indirect input and sense absolute positions and are often.
Keyboards allow a computer user to input letters, numbers, and other symbols into a computer uses an arrangement of buttons or keys. Keyboard and mouse are the most commonly used input devices. Some commonly used input output devices are listed in table below. Keyboard is the most common and very popular input device which helps to input data to the computer. A graphics tablet also known as a digitizer, drawing tablet, drawing pad, digital drawing tablet, pen tablet, or digital art board is a computer input device that enables a user to handdraw images, animations and graphics, with a special penlike stylus, similar to the way a person draws images with a pencil and paper. Digitizers, plotters, lcd, plasma display, printers, etc. An input device is a piece of hardware that is used to enter data into a computer. Today, light pens are no longer used due to the invention of touch screens. Computer graphics can use a wide range of input devices such as digital camera, keyboard, multi button mouse. It is an interactive user can control the structure of an object of various input devices.
Computer graphics chapter 3 input and interaction objectives are to learn about. In these computer graphics notes pdf, we will introduces fundamental concepts of computer graphics with focus on modelling, rendering and interaction aspects of computer graphics. Keyboard, mouse, tracker ball, joystick, graphics tablet, digital camera. Input devices are necessary to enter data and instructions into a computer as input unit is the only medium through which users can interact with the computer. Output device can produce the final product of machine processing into a form usable by humans. Input devices only allow for input of data to a computer and output devices only receive the output of data from another device. Data is input into the computer by hand manual input. Example gl graphics library system on silicon graphics equipment. Nov, 2018 an input device is any hardware device that sends data to a computer, allowing you to interact with and control it. Joystick and gamepad are also input devices which are also input devices which are used to control the movement of object on the screen. Computer input devices following are some of the important input devices. Input devices various hardware devices have been developed to enable the user to interact in the more natural manner.
Graphics software two classifications general programming package specialpurpose application package. Without any input devices, a computer would only be a display device. In computing, an input device is a piece of computer hardware equipment used to provide data. In computing, an input device is a peripheral piece of computer hardware equipment used to provide data and control signals to an information processing system such as a computer or other information appliance. Here the observer is given some control over the image by providing him with an input device for example the video game controller of the ping pong game. It forms images from tiny dots, called pixels that are arranged in a rectangular form.
Computer graphics input devices, lecture notes for computer graphics. In the 1980s, light pen usage expanded to home computers, like the bbc micro computer. Sep 07, 2017 output device is electronic equipment connected to a computer and used to transfer data out of the computer in the form of text, images, sounds or print. Input devices include keyboards, mouse, digital camera and light pen. An input devices converts the data and instructions into binary form that computer can understand. Mostly they are used for playing games on the computer. The data can be in the form of text, graphics, sound, and text. Computer graphics pdf computer graphics book pdf notes starts with the topics covering introduction of computer graphics. Getting the right input devices for your computer system can make a world of difference in your computer s performance and can improve the quality of your time spent at the screen.
Here the observer is given some control over the image by providing him with an input device for example the video game controller of. A computer keyboard is one of the primary input devices used with a computer. One of the primary input devices used with a computer. Input devices in computer graphics in hindi youtube. Interactive computer graphics involves a two way communication between computer and user. Shekhat, ce department 2160703 computer graphics what is computer graphics. Input devices output devices keyboard mouse joystick scanner light pen touch screen monitor lcd printer plotter ii. A pointing device often used by designers and artists to allow natural hand movements to be input to graphics applications. Output devices are used to display the result or information on the computer. Computer graphics notes pdf cg notes pdf free download.
At the time, the popular device for pointing on the screen was a light pen, which had come out of the radar program. However, there are dozens of other devices that can. Examples of input devices include keyboards, mouse, scanners, digital cameras, joysticks, and microphones. In computing, an input device is a piece of computer hardware equipment used to provide data and control signals to an information processing system such as a computer or information appliance. Digitizer is an input device which converts analog information into a digital form. Most devices are only input devices or output devices, as they can. These input output devices are also known as peripherals since they surround the cpu and memory of a computer system.
A graphic tablet is used mainly for computer aided design and drawing cad. A stylus is held like a pen and moved over the surface of the tablet. Input devices input devices are things we use to put information into a computer. The joystick has a vertical stick with a track ball at its bottom. The purpose of the output devices is to translate data and information from electrical impulses to a humanreadable format. Monitor and the printer are the commonly used output devices. Parts of a computer class iii, iv and v thinking of. Also, the dac1 system pioneered the use of photographic input what. An input device is the piece of computer hardware equipment used to give input to the computer. The devices which are used to input the data and the programs in the computer are known as input devices. Examples of input devices include keyboards, mice, scanners, digital cameras and joysticks.
Output devices plotter the plotter is a computer printer for printing vector graphics plotters are used in applications such as computeraided design such as diagrams, layouts, specification sheets and banners the plotter is capable of producing color drawings in a matter of minutes plotters differ from printers in that they. Output device display data from the memory of the computer. Any data or instruction entered into the computer is known as input. The keyboard looks very similar to the keyboards of electric typewriters, with some additional keys. It refers to data that is shown on a display screen or sound produced by a speaker.
Unit1 basics of computer graphics darshan institute of. Computer graphics remains one of the most existing. If you liked this video, computer input devices ppt, please hit the like button. Computer graphics notes computer graphics graphics input. What are the input devices for computer graphics answers. An input device is any hardware component that allows a user to enter data and instructions into a computer. Chapter 8 input devices, interaction techniques, and. Some graphics cards also included a connection for a light pen. In computer graphics, two or threedimensional pictures can be created that are used for research. Raster scan displays random scan displays direct view storage tubes flat panel displays mouse track ball joy stick digitizers touch panels. Ddas are used for rasterization of lines, triangles and polygons. Input device is a hardware part of the computer that is used to enter data and instructions into computer memory. The picture shows a logitech trackball mouse, which is an example of an input device. As mentioned earlier, typical input was accomplished with an alphanumeric terminal, function buttons andor dials, and the light pen or light pencil, in the case of the dac1 system.
Guis can be used in computers, handheld devices such as mp3 players, portable media players or gaming devices, household appliances and office equipment. Apr 05, 2018 if you liked this video, computer input devices ppt, please hit the like button. This transformation is performed by input interface. Dec 29, 2016 an input devices converts the data and instructions into binary form that computer can understand. Artificial life, a major subfield of complexity studies, is factfree science, but it excels at generating computer graphics. Application areas of computer graphics, overview of graphics systems, videodisplay devices, rasterscan systems, random scan systems, graphics monitors and work stations and input devices. Learn about two different perspectives from which the input devices are considered. A graphical user interface gui is a type of user interface that allows users to interact with electronic devices with images rather than text commands.
Digitizer is also known as tablet or graphics tablet because it converts graphics and pictorial data into binary inputs. The most commonly used or primary input devices on a computer are the keyboard and mouse. Computer graphics notes pdf cg notes pdf smartzworld. Jun 01, 2017 7 most important input devices of computer, namely computer graphics in powerpoint presentation formppt. 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.
They can be used by the computer to create a picture of whatever the camera had been pointed at. A graphic tablet as digitizer is used for doing fine works of drawing and image manipulation applications. Input devices a keyboard it is a text base input device. Optical character reader is an input device which is used to detect read alphanumeric characters printed on any paper. Input devices are used to enter data and instructions into computer memory from external world. The keyboard is the most common and widely used input device. Nov, 2018 an input device sends information to a computer system for processing, and an output device reproduces or displays the results of that processing. A general graphics programming package provides an extensive set of graphics functions that can be used in highlevel programming languages. Chart and diagram slides for powerpoint beautifully designed chart and diagram s for powerpoint with visually stunning graphics and animation effects. Chapter 8 input devices, interaction techniques, and interaction tasks this is the. These input devices converts input data and instructions into a suitable binary form which can be accepted by the computer. These scanned images are then used in computer aided design cad, or sent to a d printer to take a 3d printout. It is the use of computers to create and manipulate pictures on a display device. Microphone gives sound or voice input to the computer.
These tablets may also be used to capture data or handwritten. Input devices are hardware devices that allow data to be entered into a computer. Cant tell from the code could be keyboard, file, output from another program the code provides logical input. To enter information and issue commands, you use input devices. Download computer graphics notes pdf cg notes pdf and materials. 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. Keyboard, mouse, track ball, track pad, joy stick, touch screen, light pen, scanner, digital. Output can be text, numeric data, line, polygon, and other objects. It is through these devices that the computer can learn what you want the computer to do.
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