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