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