Following are some of the important input devices which are used in a computer keyboard. Memory the devices which are used to input the data and the programs in the computer are known as input devices. This is an important output device of the computer system. Input devices various hardware devices have been developed to enable the user to interact in the more natural manner. Test students understanding of peripheral devices with this simple worksheet. These inputoutput devices are also known as peripherals since they surround the cpu and memory of a computer. Input and output devices used for computer graphics. Cant tell from the code could be keyboard, file, output from another program the code provides logical input. Input devices that read printed text and graphics and transfers them to a computer in digital form data is typically input as a single image can. But when it comes to know about them and how they work, such devices are categorized as input and output devices. Input and output devices can also be written as io devices. Data is entered into the computer by pressing set of keys available with this device. Input devices pointing devices keyboard optical input devices audio input device video inpu device 7. Pdf assinment find, read and cite all the research you need on.
Output device can produce the final product of machine processing into a form usable by humans. Input devices pointing devices light pen a light pen is a computer input device in the form of a lightsensitive wand used in conjunction with a computer s crt display. In simple terms, input devices bring information into the computer and output devices bring information out of a computer system. The keyboard was invented 4 years ago by christopher l. The devices which are used to input the data and the programs in the computer are known as input devices. Jun 01, 2017 7 most important input devices of computer, namely computer graphics in powerpoint presentation formppt. Computer graphics notes pdf cg notes pdf free download. Computer graphics basic opengl, input and interaction. Inputoutput devices are required for users to communicate with the computer. Similar to an electric typewriter, a keyboard is composed of buttons that create letters, numbers, and symbols, as well as perform other functions. The most popular keyboard used today is the 101keys qwerty keyboard but multimedia keyboard is also available which contains more than 101 keys.
Examples of input devices include keyboards, mouse, scanners, digital cameras, joysticks, and microphones input devices can be categorized based on. There are foldable feet on the back of the tablet to give you up to 19 degrees of tilt to make working more comfortable. Input devices o level computer science 2210 prepared by. In c input and output are done using, printf, scanf, getchar, and putchar.
The computer uses an output device to show us something. Chapter 4 input and output oakton community college. A graphics tablet or digitizer, digitizing tablet, graphics pad, drawing tablet is a computer input device that allows one to handdraw images and graphics, similar to the way one draws images with a pencil and paper. Additionally, all input devices send data from the device over a cable or wireless transmission to the computer. A graphic tablet as digitizer is used for doing fine works of drawing and image manipulation applications. Pdf input output storages devices in computers researchgate.
There are multiple items that are considered to be input devices, such as a keyboard, mouse and microphone. Mouse, digitizer, digital camera, laser measurment device, etc. Job interview questions on basic computer technology and internet part2. Output can be text, numeric data, line, polygon, and other objects. In computer graphics, the use of logical devices is slightly more complex. Graphics input devices graphics output devices introduction virtual reality voice recognition virtual reality has generated a completely new set of input devices. Microphone microphone is an input device to input sound that is then stored in digital form. Input devices output devices keyboard mouse joystick scanner light pen touch screen monitor lcd printer plotter ii. The monitor displays the video and graphics information generated by the computer through the video card. Nov 22, 2016 input devices pointing devices keyboard optical input devices audio input device video inpu device 7.
Researchers have suggested that attention is a key moderating variable predicting performance with an input device e. Before a computer can process your data, you need some method to input the data into the machine. Digitizer is also known as tablet or graphics tablet because it converts graphics and pictorial data into binary inputs. List of input devices, output devices and both input. An input device used to enter characters at the location marked by the insertion point or cursor can be wired or wireless. Interactive computer graphics involves not only the display of graphic output data but also the communication of input data and instructions to the computer. It allows the user to point to displayed objects or draw on the screen in a similar way to a touchscreen but with greater positional accuracy. Students need to label each type of device as either input, output or storage. D candidate brown university, department of computer science providence, rhode island lead consultant and founder. 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.
However, when used in highly interactive graphical applications, the logical input device model does not provide sufficient support for a number of fundamental issues inherent to. A morphological analysis of the design space of input devices. Computer graphics pdf computer graphics book pdf notes starts with the topics covering introduction of computer graphics. Buxton and baecker 4, 7 proposed a taxonomy of input devices classified according to the. We use input devices to tell the computer what to do. The cintiq 16 can connect to your computer or mobile device via a 3 in 1 hdmi cable. Using a computer may seem an easy task because of the tools that are attacked with the device and helps in managing the system properly. Keyboard when exploring the functions of input devices, looking at the keyboard is important as it is the device people use most to input data. Interactive computer graphics input, interaction and animation. A graphics tablet or digitizer, digitizing tablet, graphics pad, drawing tablet is a computer input device that allows one to handdraw images and graphics, similar to.
They are divided into two categories 1 manual input devices devices that need human involvement to input data. 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. Chapter 8 input devices, interaction techniques, and. Apr 05, 2018 input devices in computer graphics in hindi. The speed of this printer is very fast and it gives out very fine quality prints. Nov 25, 2019 the hd display features an antiglare coating to cut down on distracting reflections and light glare. Input devices input devices are things we use to put information into a computer. A logical device is characterized by its highlevel interface with the user program, rather than by its physical characteristics. An input device is any tool device for entering information into a computer. Here i am going to share you about list of basic input devices, output devices and both inputoutput devices. The logical input device model, as is adopted in the standardized graphics package gks, has been an accepted basis for producing deviceindependent graphics systems.
Input devices let you to transfer data and user command into the computer system. Pdf we provide an overview of some of our input device developments, which we designed in response to the. The following sections provide more in depth information and answers to some of the more frequently asked questions. Fahad khan an input device is a piece of hardware that is used to enter data into a computer. If you liked this video, computer input devices ppt, please hit the like button. The functions of input devices include the multiple ways a person can input data into a computer. The did is a highly intuitive 3d input device, and we feel that many of its features may be applicable to. Input and output devices of a computer system are the devices that connect you to computer. Interactive computer graphics input, interaction and. The logical input device model, as is adopted in the standardized graphics package gks, has been an accepted basis for producing device independent graphics systems. A graphic tablet as digitizer is used for fine works of drawing and image manipulation applications. A free powerpoint ppt presentation displayed as a flash slide show on id. Dec 29, 2016 keyboard is an input device for entering data and instructions into a computer. Nov, 2018 what an input device sends inputs to a computer depends on the device.
They are locators and selectors a joystick has two potentiometers, they have been attached to a single lever. Computer graphics notes pdf cg notes pdf smartzworld. Beautiful, fun and colourful graphics to engage and excite students. To be effective, input devices must be tailored to match the characteristics and abilities of humans. It is, after all, much easier to modify a computer device than the human user. Feb 10, 2017 basically, any device that converts analog information to a digital format that a computer can read is a graphical input device. 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. Other examples of peripherals are expansion cards, graphics cards, image scanners, tape drives, microphones, loudspeakers, webcams. What an input device sends inputs to a computer depends on the device. Monitors are very similar to televisions but usually display information at a much higher resolution. 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. In this video we will learn 7 input devices in computer graphics. It is used to enter data and instructions directly into the computer.
The logical input device model, as is adopted in the standardized graphics package gks, has been an accepted basis for producing device. A computer keyboard is one of the primary input devices used with a computer. Cant tell from the code could be keyboard, file, output from another. Basically, any device that converts analog information to a digital format that a computer can read is a graphical input device. Application areas of computer graphics, overview of graphics systems, videodisplay devices, rasterscan systems, random scan systems, graphics monitors and work stations and input devices. The component of interactive computer graphics are a. The data can be in the form of text, graphics, sound, and text. They classified input devices under the graphics subtasks they were capable of performing e.
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. The joystick is a vertical stick which moves the graphic cursor in a direction the. If you liked this video, computer input devices ppt. Pointing devices a pointing device, or sometimes called a pointing tool, is a hardware input device that allows the user to move the mouse cursor in a computer program or operating system. Input and interaction cs 537 interactive computer graphics prof. An input device is any peripheral used to provide data and control signals to a computer. Input and output devices of computer by dinesh thakur category. Mouse mouse is another input device which is commonly found connected with the computers. The result is a stopmotioncapture device called the dinosaur input device, or did. 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. Dataglove pressure pads digitizing arm various other tactile and gesture input device much research is currently in progress to devise better ways of interacting with the machine. Without any input devices, a computer would only be a display device.
Devices input and output unit 4 input output devices. Computer graphics multiple choice questions and answers pdf download for freshers experienced cse it students. Input and output devices input devices allow us to send information to the computer. For example, as you move a computer mouse, the data sent to the computer is the xy axis movements used to display the mouse cursor on the screen. The input devices are the hardware that is used to transfer transfers input to the computer. 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. Examples of input devices include keyboards, mouse, scanners, digital cameras, joysticks, and microphones. Other examples of peripherals are expansion cards, graphics cards, image scanners, tape drives, microphones, loudspeakers, webcams, and digital cameras. So that we can say in simple term, a computer input device is a hardware component that is used to enter data and instruction into the computer to perform specific task. Microphone is an input device to input sound that is then stored in a digital form. Data that has been processed into a useful form, called information p. Some commonly used inputoutput devices are listed in table below. A peripheral device is generally defined as any auxiliary device such as a computer mouse or keyboard, that connects to and works with the computer in some way.
The device you use will depend on what form this data takes be it text, sound, artwork, etc. Input devices in computer graphics in hindi youtube. What are graphical input and output devices in a computer. The input device converts the data into the computers own internal code. However, any sensed information about physical properties of people, places, or things can serve as input to computer systems. This data is given to the computer by using particular devices named computer input devices. There are 104 buttons on the keyboard which are called keys. A flatbed scanner works like a copy machine except that it creates a file of the document rather than a paper copy. New input devices and media can help redress this imbalance by obtaining data from the user.
Perfect activity for digital technologies computer science lessons. Jan 05, 2017 it is the most commonly used input device. Output device display data from the memory of the computer. Jun 18, 2016 input devices of computer input device device. User points to picks the object with an input device light pen, mouse, trackball. Digitizer is also known as tablet or graphics tablet as it converts graphics and pictorial data into binary inputs. Any hardware component used to enter data, programs, commands, and user responses into a computer scanners and reading devices voice input keyboard pointing device. Computer inputoutput ports and interfaces 1 terms and abbreviations.
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