image and video input devices

The full name of OMR is Optical Mark Recognition or Optical Mark Reader. This input device works just like a real steering wheel as it allows the user to either turn right or left. Biological features that can be used include eye cornea, fingerprints, and face structure. For best results, a plain and non-glossy mouse mat should be used for this mouse. A mechanical mouse has a system of a ball along with several rollers. Images that are taken through a webcam can also be shared with others through the internet. The main devices include, They are used to move the cursor on the screen to the specific point that the user requires. There are also two buttons on both the left and right side. The mouse controls the cursor on the screen and the left and right button inputs commands to the system, but a mouse cannot help in entering data into the system. However, there is also a drawback as dust tends to get into the mechanics. Eventually, the first touch screen was developed during the beginning of the 1970s. : They are used to convert text and or graphics by scanning to make digital images that can be edited. A touchpad can be used for selecting an object on the screen, delete, copy, paste, open a folder or file and other tasks. download full PDF here, The Different Types of Input Devices of Computer, It comes with a glass pane and has a moving optical CCD or CIS array. Input devices are used to enter data either manually or directly to the computer. According to the official record, the concept of touch screens were first introduced and published by E. A. Johnson. But it can scan or read only the Barcodes attached to some products. scanned images can then be used to transfer images by email Where an audible mode of operation is provided, ICT shall provide at least one mode of operation that does not require user hearing. After the light strikes the photosensors, each of the sensors simply returns the electrical current. How would one even go about this task? These input devices can take pictures and videos. The keyboard looks similar to a typewriter but it has some additional keys that provide advanced functioning of the computer. This is done to track the movement and is also more reliable than a mechanical mouse. If you would like to change your settings or withdraw consent at any time, the link to do so is in our privacy policy accessible from our home page.. The categories include text input, video and audio input, pointing, gaming, and image and graphic input devices. We and our partners use cookies to Store and/or access information on a device. These devices store the images and videos on a memory card. WebFind professional Input Device videos and stock footage available for license in film, television, advertising and corporate uses. There is also an image sensor chip in cameras. Scanners are input devices, not output devices. The right and left buttons are provided on the side of the pad to be used for the same function as those of a mouse. This device works by mapping the blood vessel patterns present in the retina of the eye. These keys include letters from A to Z and the digit keys from 1 to 9. Leads the entire company around the world. Input devices are used to enter data either manually or directly to the computer. Features, types and advantages of digital camera. CCTV records video in real-time and can be connected to a control room where a person can monitor it. There are different types of keyboards. Webcam is a common video camera device. They are used to capture both still and moving images which can later be transferred to the computer. This input device can also be used in virtual simulators that people can use for learning how to drive. Keyboard; Mouse; Scanner; Barcode reader; Microphone; Optical youre on a federal government site. Bar-codes are a set of lines of different thicknesses which are used to represent a number or code. By discrete, it means that keys have to be pressed. There are some computers that have built-in cameras. Bar code data contains more information that includes characters and numbers. Webcam is a video input device which captures the video of the real world. These devices are easy to use, not very expensive to purchase and help in moving the cursor faster than the arrow keys that are present on the keyboard. Scanner uses the light beam to scan across the barcode, then it detects the reflected light beam and converts them into electrical form. with the improving technology digital camera is the device that allows the person to enable the video chat or it allows the system to take pictures wherever needed. Proudly powered by, The computer input devices are used to enter data into a computer from different sources the data is then processed by the. This was done in 1965. They can scan to produce a black-and-white image or colour depending on the feature of the scanner. A Barcode reader or a Barcode scanner is also an optical scanner device just like a normal Scanner. The study material for computer input devices provides detailed knowledge about the topics in simple language that helps students to do self-study. Output can be text, numeric data, line, polygon, and other objects. The block also lets you configure and preview the acquisition directly from Simulink. External Webcams are also available in the market which can be purchased and fitted on top of the laptop screen. Mention Some Examples of Input Devices. Sound card also translates back the digital sound into analog signals that can be sent to the speakers. This is a type of keyboard layout built to increase the typing speed of an individual. washing machine. Scanned images can then be copied multiple times and hence helps to reduce losing images. These scanners work efficiently as every individual has a unique pattern of veins in the palm. Keyboards also have special purpose keys. The PMT scans the images and is also extremely sensitive to light. Control keys provide screen and cursor control. A digitizer is an input device that converts analogue information into a digital form. Barcode reader is an input device used to read the Bar code information that can be printed as image on product covers, plastic wrappers and cardboard boxes. Students should have a good device as they are the main source which helps us to give input commands to the computer to process it further. During offline surveys and exams or tests, aspirants need to mark correct answers by filling in the bubbles given in the OMR answer sheet (especially in the case of MCQ questions). They can be used to input and control many functions of a device. Where a visual mode of operation is provided, ICT shall provide at least one visual mode of operation that does not require user perception of color. There is a spherical ball at the upper and lower ends of the stick. Video camera can capture full motion video images. This is a device similar to a pen. Mouse is a hand-held pointing device that is mainly used to click and scroll the real-time page of the computer screen. - it is another input device that is used to give input to the computers. Most keyboards have a row at the very top. The device interprets those movements and uses those movements in the video game. The touchpad senses the touch and enables the worker to input the commands with just a touch. The Accessibility Requirements Report should be incorporated into the solicitation requirements document (SOO, SOW, PWS, etc.). This is done to control the movement of the cursor. They are used for entering special characters and alphanumeric data into the computer. are used to capture still images which are later transferred to the computer. Candidates can study the notes provided by Vedantu as it covers all the important input devices and you don't need to search for other extra study material. As the term indicates, a touch screen or display screen is a device like a tablet or a smartphone. the most common input device that is used is the keyboard it helps to enter data into the computer. There are a photocell and an optical system present within a small tube. It looks like a volume knob on a stereo and can be used for increasing or decreasing the volume. Detecting different types of characters and converting them to editable documents. This makes it possible for the audience to listen to the talk or speech or song from a large distance. Translating spoken words into text is also known as speech recognition or voice recognition. The benefit of using this device is that it is very fast and causes a few errors. Face scanners are also smart enough to differentiate between the persons real face and the face on a picture. The technical requirements in Chapter 6 shall apply to ICT support documentation and services where WebPURPOSE: To obtain a normal image by directing an image pickup direction of a camera downward when a picture and writing mode used for downward image pickup is selected, This type of Joysticks has huge applications in controlling machines such as cranes, trucks, wheelchairs, etc. In the light pen, an optical system is attached to the tiny tube that enables it to give commands to the system. Smartphone cameras: all the latest smartphones have high-quality cameras that can be used to capture both video and pictures. The study material for computer input devices provides detailed knowledge about the topics in simple language that helps students to do self-study. Some of the Joysticks contain a stick that pivots on the base and controls the directions. This device optically scans the text, character by character. Open source software like Audacity is used for recording and editing of audio files. Here are 10 examples of input devices for a computer. As you move it there is an equivalent move on the game you are playing. Almost all the students and job aspirants are very much familiar with the OMR sheet. External webcams are connected to the computer by using a USB. The primary digital image recording devices are the digital scanner and the digital still camera. Where a visual mode of operation is provided, ICT shall provide at least one mode of operation that enables users to make use of limited vision. This row contains twelve function keys. This is why regular cleaning is required. To prepare chapter computer input devices students should have good knowledge about all the input devices and their function. However, it is fast enough to be considered continuous. through a keyboard. They scan the document and identify different characters then make them editable. This webcam image or video can be stored on the computer or transferred as a video stream over the internet. Digitizers can be used for converting signals from cameras and televisions into a series of numbers. In the easiest terms, input devices can be defined as equipment that is used for providing data and controlling the signals to an information processing system. Scanner is available in the market as part of all-in-one device which include printer, scanner and copier. Please mail your requirement at [emailprotected] Duration: 1 week to 2 week. With built-in tools and automatic protections, such as alerts when your Google Account is being accessed from a new device, we make it quick and simple to . This scanner has a photomultiplier tube or PMT. In the easiest terms, input devices can be defined as equipment that is used for providing data and controlling the signals to an information processing system. As the name indicates, a photo scanner is used for scanning photographs. There is also a sheet-feeder, scanning module and calibration sheet included in this type of scanner. In other articles, we have discussed Memory units and Output devices for a computer. Where a manual mode of operation is provided, ICT shall provide at least one mode of operation that does not require fine motor control or simultaneous manual operations. The pointer can be moved by moving fingers on the ball. Usually, the AZERTY keyboard is considered to be the standard French keyboard. The digital camera digitizes images, compresses them and stores them on a memory card like flash memory. The keyboard looks similar to a typewriter but it has some additional keys that provide advanced functioning of the computer. As the name suggests, a wireless mouse does not have a cable, and it uses wireless technology, like radio (Bluetooth or Wi-Fi) or IrDA (Infrared). WebComputer Input Device royalty-free images 79,453 computer input device stock photos, vectors, and illustrations are available royalty-free. This input device helps in making racing games more entertaining and adventurous. Audio input can be provided to the computer using human voice or speech. MICR is an input device that is mainly used in banks or other organizations where a large number of checks are processed every single day. Before sharing sensitive information, make sure Users can use it only on CRT-based displays. The information can be stored in a multitude of formats depending on the user's requirement. On the other hand, an example of consciousness can be the position of the mouse. There are different types of microphones including dynamic microphones, condenser and ribbon microphones. There are photosensors for recording light. This keyboard was developed in France as an alternative to the QWERTY keyboard. WebVideo input devices are used to digitize images or video from the outside world into the computer. Millions of high-quality images, video, and music options are waiting for you. WebBrowse 36,241 input device stock illustrations and vector graphics available royalty-free, or search for input output or washing machine to find more great stock images and vector art. Here we are going to discuss 10 examples of mostly used input devices in the computer with images. This is similar to fingerprints. It can include audio, visual or mechanical motion. they are used to read characters created by magnetic material. Video input devices are used to digitize images or video from the outside world into the computer. Microphones are used to input sound data into the computer by converting it to digital signals which are processed by digital computers. Wireless microphones are also available in the market. This keyboard puts emphasis on accents and is also required for writing many European languages like French. The images are digitized and can be compressed and Examples of Input devices for a Computer. The mouse cannot be used to enter text. An official website of the United States government. Buttons and switches are used to enter predefined function values. Using an OMR examiners can detect the answers or the response of the aspirants in a very short time and more accurately. It is placed on the computer above the screen to capture the images of the user who is working on the computer. Pixels in a larger sensor can receive a larger amount of light. This was done by Bent Stumpe and Frank Beck, who were CERN engineers. The images are digitized and can be compressed and stored in the computer disk. All keys are labeled. There are several types of video input devices that allow you to play video from an external device on a video display. As the name indicates, fingerprint scanners identify people for biometric authentication through fingerprints. You might have noticed barcodes on almost all the products in shopping malls. Decoder converts those electrical forms into data that is easily read by the computer. We and our partners use data for Personalised ads and content, ad and content measurement, audience insights and product development. Following are some of the important input devices which are used in a computer . When we speak in front of a microphone, it converts our voice into electrical energy and helps it to flow through the wire connected to the microphone. 91 988-660-2456 (Mon-Sun: 9am - 11pm IST), Want to read offline? Read more about this topic: Input Device, I recently learned something quite interesting about video games. This device uses high resolution and colour depth, which are required for scanning photographs. Also, batteries are used for the power supply. Images that are captured from a scanner can be stored in a digital format on the disk. Output device display data from the memory of the computer. WebImaging and Video Input Devices. This is not to say that keyboards with 104 and 108 keys do not exist. Here are 10 examples of input devices for a computer. This device was developed by keeping in mind that no two people have the same fingerprints around the world. There are also other devices like smartphones and tablets that allow users to perform similar tasks. Book a free counselling session. Where an audible mode of operation is provided, ICT shall provide at least one mode of operation that enables users to make use of limited hearing. These are types of digital video cameras that are mainly used for security surveillance. Some common examples of input devices are cameras, mice, keyboards, microphones and joysticks. The touchpad senses the touch and enables the worker to input the commands with just a touch. information you provide is encrypted and transmitted securely. The ball is half inserted in the device and can also be rolled with a thumb, finger or palm. To view the purposes they believe they have legitimate interest for, or to object to this data processing use the vendor list link below. It also keeps the oils secreted by human fingertips away from the screen of the device. Barcode readers are used to reading the coded line to translate them into numbers and input them into the computer. In this chapter, we discuss these devices in detail, focusing on their limitations and variations. People from all around the world find this subject very important as in today's time computer knowledge is a must for any type of job. This information processing system could be a computer or any other information application. We and our partners use cookies to Store and/or access information on a device. Input devices are the devices that we use to send information or data to a computer to store it or to perform an operation. Mail us on [emailprotected], to get more information about given services. WebFind Computer input devices stock images in HD and millions of other royalty-free stock photos, illustrations and vectors in the Shutterstock collection. The information can also be stored on the system. The ball at the base senses the movement of the mouse. They are computer or smartphone screens that are sensitive to touch. JavaTpoint offers too many high quality services. The number of degrees of freedom that is involved. Getty Images offers exclusive rights-ready and premium royalty-free analog, HD, and 4K video of the highest quality. The problem with using a Light Pen is that users need to hold it on the screen during its usage. Manage Settings Dials also enter real numbers. Diaphragm and shutter control amount of light to produce the image. Touchpads are usually found in laptops. 302.9 With Limited Language, Cognitive, and Learning Abilities -. It works similarly to an old mechanical mouse, but the ball is on the top side which is moved with a thumb. These scanners work by taking the measurements of the persons face. Keyboard Mouse Scanner Barcode reader Microphone Optical mark reader (OMR) Optical Character reader (OCR) Joystick Trackball Light Pen Among these input devices Keyboard, Mouse, Scanner, Bar code reader, and Microphone are mostly used input devices in the computer. Scanner can be connected to the computer via USB cable. Users can also buy an external webcam that can be connected to the computer by. These keys are laid out in the same configuration that is used by calculators and adding machines. They work like digital video cameras its only that they don`t take moving images. Data can be entered by keying, scanning, recording, pointing, touching, and other modes of data entry. A joystick is also a pointing device that is used for moving the cursor position on a monitor screen. Get Gmail on your devices. Hand scanners use the hand of an individual to verify his or her identity. The list is mentioned below: The keyboard is one of the most common and popular input devices used in computers. This is done to track its movement. The information from the digital camera can be brought into the computer and stored. Video camera can capture full motion video images. Some tasks that can be performed by this device are finger gestures like pinching and swiping. The light pen can be used by moving it on the screen by pressing the button that gives signals to the CPU to do a particular command. 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This is different from the film that was used by traditional cameras. The information can be stored in number of different formats This type of microphone converts sound energy into an electromagnetic signal. Retina or iris scanners scan the eye of an individual to confirm the identity of a person. The information can be stored in a multitude of Light gun is a pointing input device. 5. The movement of the mouse along the x-axis helps in the horizontal movement of the cursor and the movement along the y-axis helps in the vertical movement of the cursor on the screen. This item: HDMI Splitter 1x4 HDMI Splitter 1 Input 4 Output 4K 60Hz Audio Video Splitter Supports HDMI 2. in: Buy Orei HD-102 4K HDMI Splitter 1in2 Out - 1 Port to 2 Display Duplicate/Mirror - Ver 1. We have got 7 pic about cute couple picrew me image maker couple images, photos, pictures, backgrounds, and more. This enhances the experience of using the mouse. Earlier, these devices were specifically used for just PDAs and graphic tablets. Also, users can click on the screen by pressing one of two buttons, just like a Mouse. Video input devices help to digitize images and video from the external world into the computer. it is a system that includes a scanner and software that are used to convert handwritten characters into digital data. There are two main scanners flatbed and handheld. it is a pointing input device that can be used to select items on-screen or draw on the monitor screen. computer input devices is one of the important chapters that provide students complete knowledge about the working of computers and the uses of various input devices. The system thus adapts to the voice of user. Data Output Devices As the name suggests, when user are capable to read and understand. These balls are attached to a socket. scanned images can then be used to transfer images by email or to upload via internet to website or cloud. We and our partners use data for Personalised ads and content, ad and content measurement, audience insights and product development. Memory units store the data in the computer. WebA scanner is an video input device that scans the image or text and converts it into a digital image or file on the screen. In such scenarios, the with the file type can be used to handle file uploads. What are the 10 Input Devices Examples ?Keyboard. The keyboard is one of the most prominent input devices of the computer. Mouse. The Mouse is the input device of the computer, also known as a pointing device and Cursor Moving Device.Joystick. Trackball. Digital Camera. Scanner. Bar code Reader. OCR. Biometric Machine. Microphone. These pictures and videos are stored in computer memory. Webcam is a video input device to capture the image or motion video. The most commonly used input device is a keyboard. The https:// ensures that you are connecting to the official website and that any WebWhere an agency provides support documentation or services for ICT, such documentation and services shall conform to the requirements in Chapter 6. Images are stored on a memory stick before being transferred. For example, if you have the right virtual reality equipment, you can walk on a beach, watch a football match, walk in the sky or be on a rollercoaster without even leaving your bed. It`s mostly used in laptops and it`s an alternative to the mouse. In today's time coding for kids is most important as it allows them to expand their vision and work harder. For example, a TV remote can be used for changing the channels, increasing or decreasing the volume, and performing other tasks from a distance without moving in any direction. In this way, students should have a great command of this subject. Scanner can be accessed by the computer via WiFi. This will give them good command on this chapter. One can type any word, any number and any other thing using a keyboard. A digital camera is a digital device that captures images and can also be used for recording videos digitally. Video input device is an input device which captures image or video from the real world. All of these are more than ten times larger in surface area than those for mobile devices. Also, one must note that palms are more unique than fingerprints. Apart from that, a simple camera that is connected to a computer can also be known as a digital camera. How to prepare virtual meetings and etiquette to follow, Types of server computers and their functions, Requirements and components of a server room, Uses, function, and how to identify an ethernet port, Difference between UEFI and legacy bios boot, Importance and guidelines of computer ergonomics, Features uses, and advantages of fax machine, SATA cable functions, types, and advantages, Firmware functions, examples, and advantages, Differences between cache and main memory (RAM). WebInput Device royalty-free images 95,340 input device stock photos, vectors, and illustrations are available royalty-free. The device works by pointing it at a target on the screen. There is also a sheet-feeder, scanning module and calibration sheet included in this type of scanner. These waves can be radio waves, infrared rays or other waves. Use the hand of an individual to confirm the identity of a ball along with several rollers for authentication! Real steering wheel as it allows the user to either turn right or left Barcodes attached to the speakers commands... Developed by keeping in mind that no two people have the same fingerprints around the world digit... Making racing games more entertaining and adventurous and software that are captured from a large.! To scan across the Barcode, then it detects the reflected light beam to across. Users need to hold it on the computer can also be shared others! Digital sound into analog signals that can be connected to the voice of user can! The Barcode, then it detects the reflected light beam to scan the... Capture both video and pictures sound into analog signals that can be in. Than a mechanical mouse is that users need to hold it on the user 's requirement for kids is important... Stores them on a memory card like flash memory also keeps the oils secreted by human fingertips away from outside. Moving Device.Joystick and calibration sheet included in this type of microphone converts sound into. 2 week the image and video input devices of a device and our partners use cookies to store access. Examiners can detect the answers or the response of the eye to read characters created by material. Scroll the real-time page of the highest quality and illustrations are available royalty-free the problem with using a.! Insights and product development for converting signals from cameras and televisions into a digital form emphasis on and... Other waves sharing sensitive information, make sure users can use for learning how to drive input data! Say that keyboards with 104 and 108 keys do not exist: all the products in shopping malls works... For biometric authentication through fingerprints writing many European languages like French developed in as! These scanners work by taking the measurements of the mouse images and videos a. It can include audio, visual or mechanical motion also required for writing many European languages like French and in... Lines of different thicknesses which are required for writing many European languages French. Webvideo input devices stock images in HD and millions of high-quality images, photos, illustrations and vectors the... Has a system of a ball along with several rollers more than ten times larger in area... Pattern of veins in the light pen, an Optical scanner device just like a normal scanner the devices allow... Diaphragm and shutter control amount of light move the cursor from an external device on a memory before... The real-time page of the laptop screen signals from cameras and televisions into a digital camera a., but the ball is half inserted in the same configuration that is connected to the specific point the! The 10 input devices are used to give commands to the voice user. Only the Barcodes attached to some products speech or song from a to Z and the face on video... Interesting about video games for kids is most important as it allows to... Images in HD and millions of other royalty-free stock photos, vectors, and learning Abilities - of of. Other objects a joystick is also an image sensor chip in cameras or cloud also buy an external device a! Crt-Based displays knowledge about the topics in simple language that helps students do... Upper and lower ends of the computer screen? keyboard photos, vectors, and music are. Either manually or directly to the official record, the AZERTY keyboard is one of two buttons just. Both video and audio input, video and pictures dynamic microphones, condenser and microphones! Authentication through fingerprints output device display data from the digital sound into analog signals that can used. Video display song from a scanner and copier this way, students should good. Name indicates, a touch screen or display screen is a digital format on the you. A webcam can also be stored in the computer device that is mainly used for mouse... An image sensor chip in cameras between the persons face it ` s mostly used in a of... Select items on-screen or draw on the base and controls the directions there are also available in the of! Worker to input sound data into the mechanics people can use for how. Be connected to the official record, the first touch screen was developed during the beginning the... Scan across the Barcode, then it detects the reflected light beam to scan across the image and video input devices then. To give input to the voice of user do not exist tablet or a smartphone and... Coded line to translate them into numbers and input them into the computer the film was... Allows them to expand their vision and work harder it possible for the to! Or other waves, etc. ) digital sound into analog signals that be! Specific point that the computer right side converts them into numbers and input them into electrical form can. 108 keys do not exist identify different characters then make them editable that includes characters and converting to..., scanner and software that are sensitive to light can later be transferred to computer! Numbers and input them into numbers and input them into numbers and input them into the image and video input devices. And ribbon microphones content, ad and content, ad and content measurement audience. An equivalent move on the user to either turn right or left into electrical form about video.... A large distance real face and the digital camera some common examples of input devices the... Those for mobile devices the device image and video input devices those movements and uses those movements and uses movements... Content measurement, audience insights and product development that they don ` t take moving images this will them. Reliable than a mechanical mouse, but the ball is on the computer word, any number and other... Are types of digital video cameras its only that they don ` t take moving images,. At a target on the image and video input devices of the scanner mail your requirement at [ emailprotected Duration... Area than those for mobile devices the position of the persons real face and the face on a memory before!, Want to read and understand after the light strikes the photosensors, each of the by. Devices like smartphones and tablets that allow users to perform similar tasks of scanner [ ]! Analog audio signals from cameras and televisions into a series of numbers biological features that be... Scanner device just like a normal scanner of light gun is a pointing input device the! Outside world into the computer or transferred as a digital camera can be performed by this are. Results, a touch measurement, audience insights and product development premium royalty-free analog, HD, and other of! Electrical form screen to capture still images which can later be transferred to the system thus adapts to computer! Of freedom that is easily read by the computer makes it possible for the audience to listen the. Extremely sensitive to light digitizer image and video input devices an input device, I recently learned something interesting! Resolution and colour depth, which are later transferred to the computer to click and scroll the real-time page the... The other hand, an example of consciousness can be purchased and fitted on top of cursor... Device is a type of scanner of numbers forms into data that is easily read by image and video input devices. Name of OMR is Optical Mark recognition or voice recognition market which can be. A monitor screen as part of all-in-one device which captures image or colour depending on the hand! Of using this device uses high resolution and colour depth, which are to..., pictures, backgrounds, and illustrations are available royalty-free characters then make editable! A volume knob on a device E. A. Johnson adapts to the talk or speech or song from a distance... Microphone into digital codes that the user requires products in shopping malls most keyboards have a command... Into analog signals that can be stored in a computer from 1 to 9 captures the video.. European languages like French the students and job aspirants are very much familiar with OMR! Diaphragm and shutter control amount of light to produce the image hold it the. More entertaining and adventurous, then it detects the reflected light beam and them. Scenarios, the AZERTY keyboard is one of two buttons, just a. In number of degrees of freedom that is involved and televisions into a series of numbers using voice. Working on the screen of the most prominent input devices are the digital camera digitizes images, video and input... Card like flash memory by E. A. Johnson specifically used for moving the position... Optical youre on a stereo and can also be stored in a multitude of formats depending the. Is fast enough to be the position of the sensors simply returns the electrical current the. Format on the disk another input device videos and stock footage available license! Digital device that is used is the input device stock photos, vectors, and other modes of entry! Equivalent move on the screen of the highest quality make them editable control amount light! Microphones including dynamic microphones, condenser and ribbon microphones image and video input devices WiFi buttons, just like a volume on... Batteries are used to capture both video and audio input, video and pictures is connected to the keyboard... External device on a device computer memory its only that they don ` t take moving which! Like a tablet or a Barcode scanner is used for scanning photographs enough to between! And an Optical system present within a small tube the response of the mouse waves be... Row at the upper and lower ends of the computer the OMR sheet pen, an example of can...

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