Keyboardmouse joy stick microphone scanner termasuk unit A Storage Device B from CS MISC at SMK Negeri 2 Klaten. Study Resources. Main Menu; by School; by Literature Title; Keyboard mouse joy stick microphone scanner termasuk. School SMK Negeri 2 Klaten; Course Title CS MISC; Uploaded By asepsunandar259. Keyboard mouse, joy stick, microphone, scanner termasuk unit A. Storage Device B. Processing Unit Device C. Peripheral Device D. Input Device E. Output Device 13. Bagian ini digunakan untuk menerima ataupun mengirim data keluar sistem, disebut dengan A. Harddisk Internal B. I/O atau Interface C. Flashdisk D. Removable Drive E. Harddisk Eksternal 14. Storage yang dapat menyimpan data secara permanen disebut. KeyboardMouse Joy stake Microphone Midi Camera Scanner termasuk unit a Storage from AA 1. Study Resources. Main Menu; by School; by Literature Title; by Subject; by Study Guides; Keyboard mouse joy stake microphone midi camera. School No School; Course Title AA 1; Uploaded By ProfJellyfish11396. JawabanKeyboard, mouse, joy stick, microphone, scanner termasuk unit.. Jika kamu sedang mencari jawaban atas pertanyaan: Keyboard, mouse, joy stick, microphone, scanner termasuk unit.., maka kamu berada di tempat yang tepat. Disini ada beberapa jawaban mengenai pertanyaan tersebut. Silakan baca lebih lanjut. Pertanyaan Keyboard, mouse, joy stick, microphone, scanner termasuk unit Keyboard Mouse, Joy stake, Microphone, Midi, Camera, Scanner termasuk unit (A) Storage device(B) Processing Unit devive(C) Peripheral device(D) Input device(E) Output device . c Keyboard d. Mouse e. Prosesor 32. Dibawah ini yang termasuk peralatan input device, kecual a. Keyboard b. Mouse c. Joystick d. light pen e. Printer 33. keyboard, Mouse, Joy stake, Microphone, Midi, Camera, Scanner termasuk unit a. Storage device b. Processing Unit devive c. Peripheral device d. Input device e. Output device 34. Beberapamacam perangkat keras komputer di antaranya adalah CPU, monitor, mouse, keyboard, printer, speaker, dan scanner. Perangkat-perangkat tersebut mempunyai fungsi tertentu, misalnya sebagai alat input, alat proses, media penyimpanan data, atau alat output. · Input Device 8 keyboard, Mouse, Joy stake, Microphone, Midi, Camera, Scanner termasuk unit a. Storage device b. Processing Unit devive c. Peripheral device d. Input device e. Output device 9. Berikut ini yang termasuk piranti masukan adalah, kecuali a. Keyboard b. VGA Card c. Scanner d. Joystick e. Mouse 10. Contohhardware yang termasuk dalam input device misalnya: keyboard, mouse, joystick, scanner, microphone, touchpad, pentab, webcam, dll. Keyboard dan mouse/touchpad termasuk perangkat input yang perannya paling krusial. Keberadaan kedua perangkat ini sangat berpengaruh terhadap fungsionalitas perangkat komputer. Contoh: keyboard,mouse,scanner,kamera,joystick,microphone,dll. Peranngkat input komputer dapat diklasifikasikan sbaai berikut: 1.Modalitas input (misalkan gerakan mekaanis,audio,visuall,dll) 2.Input diskrit ( (misalkn tombol yang ditekan),kontinyu (mislkn posisi mouse) Contoh perangkat input komputer. • Keyboard. mLgdz. > A keyboard, a mouse and a document reader are examples of Input devices. Scanner, Joystick, Keyboard are also input devices. Scanner scans a printed document Mouse, keyboard and joystick are input devices which work because of humans moving the devices. Data entered into computer through keyboard and mouse is an example of input. Data displayed on Desktop or Laptop or Smartphone or printed on paper or plotter is an example of output. Input devices are physical devices used to input data or information into the computer. All input devices get the user input, convert it into a certain form understood by the computer, and sends it to the processor for further processing. Different types of input devices are available for ReaderKeyboard Keyboard is the most commonly used input device. Keys available on the keyboard are 0-9 numbers, A-Z letters, F1-F12 function keys, shift, Ctrl, Alt, Tab, Cap lock, Enter, Backspace, and so on. Keyboard is directly connected to the computer through a USB cable. Keyboard can also be connected to the computer by using a Bluetooth, Radio Frequency, or Infrared adapter. Bluetooth enables wireless communication between keyboard and PC. While Alphabets and Digits keys are usually typed by single keys. Simultaneous use of 2 or 3 keys help to perform basic operations like saveCtrl+s, copyCtrl+c, pasteCtrl+v, type upper case letter shift key + alphabet, boldCtrl key + b, print Crtl key + p. Laptops come with an inbuilt Is Mouse Input or Output device? Mouse is an input mouse is the handheld input device which consists of two buttons, one on the left and the second on the right, and a scroll wheel in the middle which also works as a is also called a pointing works because of two dimensional motion is converted into a pointer or cursor movement on the use the mouse on a flat surface by using our fingers to easily move the pointer or cursor across the computer screen. In the early days, the mouse has used a ball roller for moving the cursor on the computer screen. In modern computers, mice are designed with an optical sensor that controls the cursor movement on the computer screen. Like the keyboard, the mouse is connected to the computer through USB cables or by using a Bluetooth device. Laptop computers have an inbuilt touchpad that works similarly to a mouse. By using a mouse button, we can perform some operations like select items from the menu, drag and drop the document, select single or more document lines, etc. Mouse is not used for entering text or data on the computer. The most common types of computer mice areMechanical mouseOptical mouseTrackball mouseWireless mouseMicrophone Microphone is one type of input device used to accept the sound as an receives sound waves and converts them into audio signals. Audio signals can be again converted into digital data that is stored in your stored audio is used to add sound to the presentation on video conference, voice recognition, a game application, music mixing, voice recording, VoIP- Voice over Internet Protocol, chatting, A scanner is an input device that scans the image, text in the document, regardless of a printed text or handwritten text, and objects, and then converts it into a digital image or file on the screen. Scanner input device is mainly used in big organizations like offices, schools, colleges, shopping malls, and printing of different types are available in the market - flatbed scanner, sheeted scanner, photo scanner, and handheld scanner is connected to the computer via USB Touchscreen is a computer input device as well as computer output device. Touch provides input. Screen provides the output. Touchscreen is a display screen that can be activated by touch using your fingers to interact with the devices. Touchscreen is mainly used in portable electronic devices like smartphones, tablets, and laptops on which Touchscreen acts as a graphical user interface between devices and the can provide some common functions like swiping, touch, drag, tap, and a lot of actions are done by simply touching the can also be used for other devices as such ATM, car GPS, sheet checking in the theater, medicals, cameras, Webcam is a computer input device. Webcam is a camera which is connected to the computer by using a USB or inbuilt with the computer laptops. Webcam is an input device to capture the image or motion video. This webcam image or video can be stored on the computer or transferred as a video stream over the purpose of webcam is making a video call, video conference, taking still pictures or you want to share the picture or video taken by webcam with another person, You can send through the Reader 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 consists of some set of black, dark lines and thin lines that defines the information corresponding to the goods being sold in Retail shops or the internet. Bar code data contains more information that includes characters and numbers. Barcode reader contains a scanner and a uses the light beam to scan across the barcode, then it detects the reflected light beam and converts them into electrical converts those electrical forms into data that is easily read by the computer. Different types of barcode readers available such as image scanners, laser scanners, pen wands, slot scanners, and Charge-Couple Devices CCD. > > A keyboard, a mouse and a document reader are examples of Input devices. Scanner, Joystick, Keyboard are also input devices. Scanner scans a printed document Mouse, keyboard and joystick are input devices which work because of humans moving the devices. Data entered into computer through keyboard and mouse is an example of input. Data displayed on Desktop or Laptop or Smartphone or printed on paper or plotter is an example of output. Input devices are physical devices used to input data or information into the computer. All input devices get the user input, convert it into a certain form understood by the computer, and sends it to the processor for further processing. Different types of input devices are available for ReaderKeyboard Keyboard is the most commonly used input device. Keys available on the keyboard are 0-9 numbers, A-Z letters, F1-F12 function keys, shift, Ctrl, Alt, Tab, Cap lock, Enter, Backspace, and so on. Keyboard is directly connected to the computer through a USB cable. Keyboard can also be connected to the computer by using a Bluetooth, Radio Frequency, or Infrared adapter. Bluetooth enables wireless communication between keyboard and PC. While Alphabets and Digits keys are usually typed by single keys. Simultaneous use of 2 or 3 keys help to perform basic operations like saveCtrl+s, copyCtrl+c, pasteCtrl+v, type upper case letter shift key + alphabet, boldCtrl key + b, print Crtl key + p. Laptops come with an inbuilt Is Mouse Input or Output device? Mouse is an input mouse is the handheld input device which consists of two buttons, one on the left and the second on the right, and a scroll wheel in the middle which also works as a is also called a pointing works because of two dimensional motion is converted into a pointer or cursor movement on the use the mouse on a flat surface by using our fingers to easily move the pointer or cursor across the computer screen. In the early days, the mouse has used a ball roller for moving the cursor on the computer screen. In modern computers, mice are designed with an optical sensor that controls the cursor movement on the computer screen. Like the keyboard, the mouse is connected to the computer through USB cables or by using a Bluetooth device. Laptop computers have an inbuilt touchpad that works similarly to a mouse. By using a mouse button, we can perform some operations like select items from the menu, drag and drop the document, select single or more document lines, etc. Mouse is not used for entering text or data on the computer. The most common types of computer mice areMechanical mouseOptical mouseTrackball mouseWireless mouseMicrophone Microphone is one type of input device used to accept the sound as an receives sound waves and converts them into audio signals. Audio signals can be again converted into digital data that is stored in your stored audio is used to add sound to the presentation on video conference, voice recognition, a game application, music mixing, voice recording, VoIP- Voice over Internet Protocol, chatting, A scanner is an input device that scans the image, text in the document, regardless of a printed text or handwritten text, and objects, and then converts it into a digital image or file on the screen. Scanner input device is mainly used in big organizations like offices, schools, colleges, shopping malls, and printing of different types are available in the market - flatbed scanner, sheeted scanner, photo scanner, and handheld scanner is connected to the computer via USB Touchscreen is a computer input device as well as computer output device. Touch provides input. Screen provides the output. Touchscreen is a display screen that can be activated by touch using your fingers to interact with the devices. Touchscreen is mainly used in portable electronic devices like smartphones, tablets, and laptops on which Touchscreen acts as a graphical user interface between devices and the can provide some common functions like swiping, touch, drag, tap, and a lot of actions are done by simply touching the can also be used for other devices as such ATM, car GPS, sheet checking in the theater, medicals, cameras, Webcam is a computer input device. Webcam is a camera which is connected to the computer by using a USB or inbuilt with the computer laptops. Webcam is an input device to capture the image or motion video. This webcam image or video can be stored on the computer or transferred as a video stream over the purpose of webcam is making a video call, video conference, taking still pictures or you want to share the picture or video taken by webcam with another person, You can send through the Reader 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 consists of some set of black, dark lines and thin lines that defines the information corresponding to the goods being sold in Retail shops or the internet. Bar code data contains more information that includes characters and numbers. Barcode reader contains a scanner and a uses the light beam to scan across the barcode, then it detects the reflected light beam and converts them into electrical converts those electrical forms into data that is easily read by the computer. Different types of barcode readers available such as image scanners, laser scanners, pen wands, slot scanners, and Charge-Couple Devices CCD. > Input device enables the user to send data, information, or control signals to a computer. The Central Processing Unit CPU of a computer receives the input and processes it to produce the output. Some of the popular input devices are Keyboard Mouse Scanner Joystick Light Pen Digitizer Microphone Magnetic Ink Character Recognition MICR Optical Character Reader OCR Digital Camera Paddle Steering Wheel Gesture recognition devices Light Gun Touch Pad Remote Touch screen VR Webcam Biometric Devices 1 Keyboard The keyboard is a basic input device that is used to enter data into a computer or any other electronic device by pressing keys. It has different sets of keys for letters, numbers, characters, and functions. Keyboards are connected to a computer through USB or a Bluetooth device for wireless communication. Types of keyboards There can be different types of keyboards based on the region and language used. Some of the common types of keyboards are as follows i QWERTY Keyboard It is the most commonly used keyboard with computers in modern times. It is named after the first six letters of the top row of buttons and is even popular in countries that do not use Latin-based alphabet. It is so popular that some people think that it is the only type of keyboard to use with computers as an input device. ii AZERTY Keyboard It is considered the standard French keyboard. It is developed in France as an alternative layout to the QWERTY layout and is mainly used in France and other European countries. Some countries have manufactured their own versions of AZERTY. Its name is derived from the first six letters that appear on the top left row of the keyboard. The Q and W keys in AZERTY keyboard are interchanged with A and Z keys in QWERTY keyboard. Furthermore, in AZERTY keyboard M key is located to the left of the L key. AZERTY keyboard differs from QWERTY keyboard not only in the placement of letters but also in many other ways, it gives emphasis on accents, which is required for writing European languages like French. iii DVORAK Keyboard This type of keyboard layout was developed to increase the typing speed by reducing the finger movement while typing. The most frequently used letters are kept in a home row to improve typing. 2 Mouse The mouse is a hand-held input device which is used to move cursor or pointer across the screen. It is designed to be used on a flat surface and generally has left and right button and a scroll wheel between them. Laptop computers come with a touchpad that works as a mouse. It lets you control the movement of cursor or pointer by moving your finger over the touchpad. Some mouse comes with integrated features such as extra buttons to perform different buttons. The mouse was invented by Douglas C. Engelbart in 1963. Early mouse had a roller ball integrated as a movement sensor underneath the device. Modern mouse devices come with optical technology that controls cursor movements by a visible or invisible light beam. A mouse is connected to a computer through different ports depending on the type of computer and type of a mouse. Common types of the mouse i Trackball Mouse It is a stationary input device that has ball mechanism to move the pointer or cursor on the screen. The ball is half inserted in the device and can be easily rolled with finger, thumb or the palm to move the pointer on the screen. The device has sensor to detect the rotation of ball. It remains stationary; you don't need to move it on the operating surface. So, it is an ideal device if you have limited desk space as you don't need to move it like a mouse. ii Mechanical Mouse It has a system of a ball and several rollers to track its movement. It is a corded type of mouse. A mechanical mouse can be used for high performance. The drawback is that they tend to get dust into the mechanics and thus require regular cleaning. iii Optical Mouse An optical mouse uses optical electronics to track its movement. It is more reliable than a mechanical mouse and also requires less maintenance. However, its performance is affected by the surface on which it is operated. Plain non-glossy mouse mat should be used for best results. The rough surface may cause problems for the optical recognition system, and the glossy surface may reflect the light wrongly and thus may cause tracking issues. iv Cordless or Wireless Mouse As the name suggests, this type of mouse lacks cable and uses wireless technology such as IrDA infrared or radio Bluetooth or Wi-Fi to control the movement of the cursor. It is used to improve the experience of using a mouse. It uses batteries for its power supply. 3 Scanner The scanner uses the pictures and pages of text as input. It scans the picture or a document. The scanned picture or document then converted into a digital format or file and is displayed on the screen as an output. It uses optical character recognition techniques to convert images into digital ones. Some of the common types of scanners are as follows Types of Scanner i Flatbed Scanner It has a glass pane and a moving optical CIS or CCD array. The light illuminates the pane, and then the image is placed on the glass pane. The light moves across the glass pane and scans the document and thus produces its digital copy. You will need a transparency adapter while scanning transparent slides. ii Handheld Scanner It is a small manual scanning device which is held by hand and is rolled over a flat image that is to be scanned. The drawback in using this device is that the hand should be steady while scanning; otherwise, it may distort the image. One of the commonly used handheld scanners is the barcode scanner which you would have seen in shopping stores. iii Sheetfed Scanner In this scanner, the document is inserted into the slot provided in the scanner. The main components of this scanner include the sheet-feeder, scanning module, and calibration sheet. The light does not move in this scanner. Instead, the document moves through the scanner. It is suitable for scanning single page documents, not for thick objects like books, magazines, etc. iv Drum Scanner Drum scanner has a photomultiplier tube PMT to scan images. It does not have a charge-coupled device like a flatbed scanner. The photomultiplier tube is extremely sensitive to light. The image is placed on a glass tube, and the light moves across the image, which produces a reflection of the image which is captured by the PMT and processed. These scanners have high resolution and are suitable for detailed scans. v Photo Scanner It is designed to scan photographs. It has high resolution and color depth, which are required for scanning photographs. Some photo scanners come with in-built software for cleaning and restoring old photographs. 4 Joystick A joystick is also a pointing input device like a mouse. It is made up of a stick with a spherical base. The base is fitted in a socket that allows free movement of the stick. The movement of stick controls the cursor or pointer on the screen. The frist joystick was invented by C. B. Mirick at the Naval Research Laboratory. A joystick can be of different types such as displacement joysticks, finger-operated joysticks, hand operated, isometric joystick, and more. In joystick, the cursor keeps moving in the direction of the joystick unless it is upright, whereas, in mouse, the cursor moves only when the mouse moves. 5 Light Pen A light pen is a computer input device that looks like a pen. The tip of the light pen contains a light-sensitive detector that enables the user to point to or select objects on the display screen. Its light sensitive tip detects the object location and sends the corresponding signals to the CPU. It is not compatible with LCD screens, so it is not in use today. It also helps you draw on the screen if needed. The first light pen was invented around 1955 as a part of the Whirlwind project at the Massachusetts Institute of Technology MIT. 6 Digitizer Digitizer is a computer input device that has a flat surface and usually comes with a stylus. It enables the user to draw images and graphics using the stylus as we draw on paper with a pencil. The images or graphics drawn on the digitizer appear on the computer monitor or display screen. The software converts the touch inputs into lines and can also convert handwritten text to typewritten words. It can be used to capture handwritten signatures and data or images from taped papers. Furthermore, it is also used to receive information in the form of drawings and send output to a CAD Computer-aided design application and software like AutoCAD. Thus, it allows you to convert hand-drawn images into a format suitable for computer processing. 7 Microphone The microphone is a computer input device that is used to input the sound. It receives the sound vibrations and converts them into audio signals or sends to a recording medium. The audio signals are converted into digital data and stored in the computer. The microphone also enables the user to telecommunicate with others. It is also used to add sound to presentations and with webcams for video conferencing. A microphone can capture audio waves in different ways; accordingly the three most common types are described below i Dynamic It is the most commonly used microphone with a simple design. It has a magnet which is wrapped by a metal coil and a thin sheet on the front end of the magnet. The sheet transfers vibrations from sound waves to the coil and from coil to electric wires which transmit the sound like an electrical signal. ii Condenser It is designed for audio recording and has a very sensitive and flat frequency response. It has a front plate called diaphragm and a back plate parallel to the front plate. When sound hits the diaphragm, it vibrates the diaphragm and alters the distance between the two plates. The changes in distance are transmitted as electric signals. iii Ribbon It is known for its reliability. It has a thin ribbon made of aluminum, duraluminum, or nanofilm suspended in a magnetic field. The sound waves cause vibrations in the ribbon, which generate a voltage proportional to the velocity of the vibration. The voltage is transmitted as an electrical signal. Early ribbon microphones had a transformer to increase the output voltage, but modern ribbon microphones come with advanced magnets to produce a strong signal. 8 Magnetic Ink Character Recognition MICR MICR computer input device is designed to read the text printed with magnetic ink. MICR is a character recognition technology that makes use of special magnetized ink which is sensitive to magnetic fields. It is widely used in banks to process the cheques and other organizations where security is a major concern. It can process three hundred cheques in a minute with hundred-percent accuracy. The details on the bottom of the cheque MICR No. are written with magnetic ink. A laser printer with MICR toner can be used to print the magnetic ink. The device reads the details and sends to a computer for processing. A document printed in magnetic ink is required to pass through a machine which magnetizes the ink, and the magnetic information is then translated into characters. 9 Optical Character Reader OCR OCR computer input device is designed to convert the scanned images of handwritten, typed or printed text into digital text. It is widely used in offices and libraries to convert documents and books into electronic files. It processes and copies the physical form of a document using a scanner. After copying the documents, the OCR software converts the documents into a two-color black and white, version called bitmap. Then it is analyzed for light and dark areas, where the dark areas are selected as characters, and the light area is identified as background. It is widely used to convert hard copy legal or historic documents into PDFs. The converted documents can be edited if required like we edit documents created in ms word. 10 Digital camera It is a digital device as it captures images and records videos digitally and then stores them on a memory card. It is provided with an image sensor chip to capture images, as opposed to film used by traditional cameras. Besides this, a camera that is connected to your computer can also be called a digital camera. It has photosensors to record light that enters the camera through the lens. When the light strikes the photosensors, each of the sensors returns the electrical current, which is used to create the images. 11 Paddle It is a simple input device that is widely used in games. It is a wheel that is held by hand and looks like a volume knob on a stereo that is used to increase or decrease the volume. Paddle moves or controls cursor or any other objects in the game in a back-and-forth motion. It is widely used as an alternative to the joystick. Besides this, the term paddle also refers to many handheld devices designed to control a function in an electronic device, computer, etc. 12 Steering wheel It is used as an input device in racing video games such as car racing games or in driving programs as virtual simulators to steer a vehicle. It works like the real steering wheel by allowing you to take a right or left turn. A steering wheel may be provided with acceleration and brake pedal devices and a mechanism for shifting gears. Thus, it makes racing games more adventurous and entertaining. 13 Gesture recognition devices These devices take human gestures as input. There are many such devices that respond to gestures. For example, Kinect is one such device that observes the movement of a player's body and interprets these movements as inputs to video games. This feature is also available in certain tablets and smartphones where you can perform certain tasks such as taking pictures using finger gestures such as swiping, pinching, etc. 14 Light Gun As the name suggests, it is a pointing input device that is designed to point at and shoot the targets on the screen in a video game, or arcade, etc. The light gun was used for the first time on the MIT Whirwind computer. When the gun is pointed at the target on the screen and the trigger is pulled, the screen goes blank for a fraction of a second. During this moment, the photodiode, which is present in the barrel, determines where the gun is pointed. For example, shooting ducks in a duck hunt game. 15 Touchpad It is usually found in laptops as a substitute for the mouse. It allows you to move or control the cursor on the screen using your finger. Just like a mouse, it also has two buttons for right and left click. Using the touchpad, you can perform all the tasks that you do with a mouse, such as selecting an object on the screen, copy, paste, delete, open a file or folder, and more. 16 Remote It is a hardware device designed to control the functioning of a device, a TV remote that can be used to change channels, increase or decrease the volume, from a distance without leaving the seat. The first cordless TV remote was invented by Dr. Robert Adler of Zenith in 1956. The remote sends the electromagnetic waves to communicate with the device. These waves can be infrared rays, radio waves, etc. 17 Touch screen It is the display screen of a device such as a smartphone, tablet, etc., that allows users to interact or provide inputs to the device by using their finger. Today, most of the electronic devices come with touchscreen as an alternative to a mouse for navigating a graphical user interface. For example, by touching, you can unlock your phone, open emails, open files, play videos, etc. Besides this, it is used in lots of devices such as Camera, Car GPS, Fitness machine, etc. The concept of the touch screen was first introduced and published by Johnson in 1965. The first touch screen was developed at the beginning of the 1970s by CERN engineers Frank Beck and Bent Stumpe. 18 VR VR stands for virtual reality. It is an artificial or virtual environment which is generated by computers. A person can interact with virtual objects of this artificial environment using some input devices such as headsets, gloves, headphones, etc. For example, he or she can find himself or herself walking on a beach, watching a football match, walking in the sky, etc., without actually doing all this. 19 Webcam Any camera which is connected to a computer is called a webcam. The in-built camera provided on a computer can also be considered a webcam. It is an input device as it can take pictures, and can be used to record videos if required. The pictures and videos are stored in the computer memory and can be displayed on the screen if required. Although it works almost the same as the digital camera, it is different from a digital camera, as it is designed to take compact digital photos that can be uploaded easily on the webpages and shared with others through the internet. 20 Biometric Devices Biometrics refers to a process in which a person is identified through his or her biological features such as fingerprints, eye cornea, face structure, etc. It is done by using biometric devices, which can be of different types based on their scanning features and abilities, such as i Face Scanner It is designed to identify a person by scanning his or her face. It takes the face measurements of a person. For example, the distance between eyes, nose, and mouth, etc., accordingly, it confirms the identity of a person. Besides this, it is smart enough to differentiate between a person's picture and the real person. ii Hand Scanner The hand of a person can also be used to verify his or her identity as every person has a unique pattern of veins in the palm, just like fingerprints. This device takes advantage of this feature; it identifies a person by scanning the palm of his hand. It uses infrared light to scan veins' patterns and blood flowing in them. Palm is even more unique than fingerprints. iii Fingerprint Scanner It scans the fingerprints to identify people or for biometric authentication. This device is developed, keeping in mind the fact that no two persons in the world can have the same fingerprints. It is widely used in companies as a fingerprint attendance system to mark the attendance of employees. This type of scanners captures the pattern of valleys and ridges found on a finger and store it in the memory or database. When you press your finger on the given space, it verifies the identity by using its pattern-matching software. iv Retina or Iris Scanner It scans the retina or iris of a person's eye to confirm the identity. This device is more secure than others as it is next to impossible to copy the retina or iris. It works by mapping the retina's blood vessel patterns of the eye. The blood vessels of retina absorb light more easily as well as can be identified with appropriate lighting. In this scan, a beam of low-energy infrared light falls on the retina through the scanner's eyepiece. Then, the software captures the network of blood vessels in the retina and uses it to verify a person's identity. v Voice Scanner It records the voice of a person and digitizes it to create a distinctive voice print or template. The voiceprints are stored in the database, and are used to verify the voice of a person to confirm his or her identity. The person is required to speak in the normal or same voice that was used to create a voice template. It is not much reliable as it can be misused using a tape recording. Home Computer Fundamentals Input Devices of Computer Computers are essential for this technological era. They are helping people in almost every field and making life easier. We cannot think of a world without computers because they are working efficiently and with incredible speed. We cannot communicate with a computer without an input device. Although the computer can work on its own, we will neither be able to modify its settings nor add new data to the computer. This article covers most of the input devices of a computer. Before discussing computer input devices, let's first understand the definition of an input device Definition of Input Device An input device is essentially a piece of instrument or hardware that allows users to provide data, information, or control instructions to a computer used for interaction and control. Data is entered into a computer in a raw format, which is converted into computer understandable language by input devices and processed by a central processing unit CPU to produce output. In simple terms, an input device is a kind of peripheral device that helps communicate with processing units of the computer. Note Input devices and Input Units are the same things. They are two similar terms used in different ways by different people. They are also known as peripheral or auxiliary devices. What are the Input Devices? Feeding instructions or data into a computer machine is done using hardware devices. During the process, the data is referred to as the input to a computer machine while the device or hardware device used to input the data is referred to as the input device or input unit. The input devices can be divided into different categories, such as pointing devices, keyboard devices, speech or voice input devices, draw devices, recognition devices, etc. The most common input devices of a computer system are listed below Computer Input Devices Input Devices of Computer List [Show/Hide] • Keyboard • Mouse • Joystick • Touchpad • Light Pen • Track Ball • Scanner • Graphic Tablet • Stylus • Touchscreen • Microphone • Digital Camera • Webcam • Magnetic Ink Card Reader • Optical Character Reader • Bar Code Reader • QR Code Reader • Optical Mark Reader • Biometric Devices • Motion Capturing Devices Functions of Input Devices Because input devices perform essential functions for computers, they are considered as parts of computer systems. They are electro-mechanical devices that help users input raw data into a computer. However, computers do not understand data in raw formats. Therefore, input devices convert raw data into the appropriate format or language that can be easily understood by a computer. The translated or converted data is stored in primary memory and sent to the CPU for further processing. In other words, the computer accepts raw input from users and translates the received input into machine language with the help of input devices. This is the primary function of the input device on the computer. Examples of Input Devices Several types of input devices are available to enter raw data into a computer. Each device has its own function, benefits, and drawbacks. The following are examples of commonly used input devices Keyboard The keyboard is one of the primary input devices, which helps in entering data and commands in a computer. The layout of the keyboard is almost identical to a traditional typewriter with additional keys that help in performing specific tasks. A normal keyboard usually has a variety of keys, such as alphabetic character keys, function keys, number keys, arrow keys, and control keys. The keyboard can be connected to a computer using USB for a wired keyboard or Bluetooth for a wireless keyboard. There is no specific rule for defining the number of keys; however, most keyboards come in two sizes - 84 keys or 101/102 keys. Nowadays many major brands are also making keyboards with 104 keys or 108 keys for Windows. Laptops come with inbuilt, more compact keyboards, which help make the laptop smaller and lighter. Besides, most modern devices such as smartphones, tablets, and convertible touch screen laptops come with on-screen virtual keyboards that help to input the data into a computer. Most English language keyboards have a QWERTY layout. Before the keyboard, punch cards and paper tape were used to enter data and commands into computers. Mouse A mouse is the most common and very popular pointing device that helps interact with a computer through a process called 'point and click'. This is mainly used to move a cursor on the computer's screen and click on the corresponding object using its buttons usually left, right, and middle key roller buttons. The left button helps select items while the right button helps display menus. The scroll wheel mainly helps to move the scrollbar up and down while surfing the web or reading documents. Some advanced mouse may also have additional buttons to perform specific tasks. Like the keyboard, the mouse can be both wired and wireless. Previously, the mouse used an integrated ball and roller, known as a mechanical mouse, to track the cursor move. The modern mouse uses optical technology laser to control or track the movements of the cursor; such a mouse is called an optical mouse. Joystick Joysticks are widely used to play games on a computer. They help control the characters and vehicles of the game. It can be a standalone device or can be included with multiple buttons and triggers to add options to perform more in-game features. It can also be used as a pointing device like a mouse. Essentially, a joystick is a handle that has a spherical ball at both ends upper and lower. It can be moved in all four directions, and its angle or moving direction is sent to the computer as data. Touchpad The touchpad, also known as a trackpad, is an input device that is primarily integrated with a laptop. It is a pointing device like a surface that can detect the movements of our fingers and move the pointer accordingly. It is nothing but a common alternative to a mouse and also helps to make computer devices compact, small, and lightweight. Touchpads were introduced mainly for laptops in the year 1990. Almost all modern laptops come with a touchpad that helps to perform mouse functions. Light Pen A light pen is another pointing device that has the same structure as a pen. It is a light-sensitive device consisting of a photocell and an optical system placed in a small tube. It is mainly used to select on-screen items, draw pictures, and write independently in document files using a computer screen. When the tip of the light pen is moved on the computer screen and the button on the pen is pressed, the photocell sensing element detects the screen location and sends the corresponding signal to the CPU. This helps the CPU detect pointer movements and clicks. Track Ball The trackball is a pointing device that is used to perform similar tasks as a mouse. However, its mechanical structure is slightly different from that of the mouse. Unlike a mouse, the trackball does not need to be moved around the surface. Instead, the user is required to rotate a ball by turning the fingers, which moves the pointer accordingly. The ball is inserted halfway into an instrument and may contain various shapes, such as a ball, square, or button. Because the trackball does not need to be moved around the surface, it can be perfect for low-lying areas. A trackball also has buttons to perform certain functions like a mouse. Trackballs may be stand-alone devices or may be attached to a keyboard, notebook, or laptop computer instead of a mouse. Scanner A scanner is an essential input device that allows us to convert a hard copy document into a digital file .jpeg, .png, .pdf, etc.. It basically uses optical technology that reads characters or pictures from a paper and transfers them to a computer's drive for further manipulation. Like other images, the scanned image can also be saved, edited, emailed, and printed whenever we want. Scanners can be of different types, depending on the different functionality. Some common types of scanners include a photo scanner, flatbed scanner, drum scanner, sheet-fed scanner, handheld scanner, etc. Graphic Tablet A graphic tablet, also known as a digitizer, is primarily used to digitally transform hand-drawn artwork .png, .jpeg, etc.. It is an input device with a flat surface and comes with a stylus. Users can use a stylus to draw graphics on a surface like we draw something on paper using a pen or pencil. The digitizer reads the signals and converts graphics to binary input. The same drawing is displayed on a computer screen in real-time and can be saved, edited, emailed, or printed. Besides, digitizers can also be used to signatures or texts as handwritten texts or computer-typed texts. Stylus A stylus is an input device used to draw or write on the surface of digitizers and touch-screens. It was mainly introduced for digitizers and PDAs; however, nowadays people are using a stylus with smartphones and tablets instead of fingers. This is because it can result in better accuracy, and prevent oil and scratches on the surface of the device from the user's fingers. Touchscreen Touchscreens are widely used due to the use of portable devices, such as smartphones, notebooks, tablets, laptops, etc. Touch screens allow users to input anything from moving or copying any object. Users can perform tasks using only their fingers or stylus. A touch screen is nothing but a touch-sensitive surface or monitor screen that reads the signals of movement of the user's fingers and performs certain tasks accordingly. This can be seen nowadays in most devices, such as smartphones, cameras, GPS screens, smartwatches, laptops, etc. Microphone A microphone, also known as a mic, is a type of voice input device that allows users to input voice into a computer system. Mics typically read sounds from the surroundings and convert analog sound waves into electrical signals. These signals are further converted into digital form and stored in the computer. Mics are used for many purposes, such as adding sound to a presentation, chatting while online gaming, video conferencing, voice calling, recording, voice recognition, and more. They can be of different types, depending on the quality and specific functionality. Some common types of microphones include a dynamic mic, ribbon mic, condenser mic, etc. Digital Camera A digital camera is an input device that is used to capture images and video in digital form. This allows users to store the captured media files in a memory card and transfer them to the computer. Digital cameras use an image sensor chip to capture images rather than the film used by traditional cameras of the old days. Digital cameras are widely used nowadays. Many advanced digital cameras also come with a screen that displays captured media as well as allows for many other options, such as preview, zoom, delete, send, and more. Webcam Webcam can capture images and videos and convert them into a digital form. A webcam is slightly different from a digital camera. Unlike digital cameras, webcams cannot operate independently. They should be connected to a computer. Also, webcams have no inbuilt memory; they use the computer's storage to save captured data. Webcams are most commonly used for video chatting and live-streaming videos. Magnetic Ink Card Reader MICR MICR is a device that typically reads characters or texts that are printed on paper using ink that contains particles of magnetic material. This device is mainly used in banks to read the cheque number and bank code and to send a signal to the computer to process a valid cheque. This reading process is known as magnetic ink character recognition. The MICR input device is very helpful for processing a large number of cheques in a short duration and that too with almost 100% accuracy. Optical Character Reader OCR OCR is an input device used to read the handwritten or printed text and convert them to digital text. This device reads text optically, character by character, and converts the text into digital form to be stored in a computer. It is mostly used in libraries and offices to copy texts from books and save them digitally. OCR scans the documents like a scanner and then converts them into two colored bitmap versions usually black and white. The light scanned areas are considered as background, while dark areas are considered as characters. Bar Code Reader A bar code reader, also known as a barcode scanner, is an input device used to read bar codes. Barcodes are data written as dark and light lines. Barcodes are usually printed on various items for labeling details. It is also known as a POS point of sale scanner. The bar code reader scans the bar code image using light, which is then reflected and translated into an analog signal. The signals are then decoded and transformed into alphanumeric values to be stored in a computer connected to a barcode reader. This ultimately helps in identifying product details and prices from the database. QR Code Reader The QR code reader, also known as the QR code scanner, is an input device used to read QR codes. QR codes are computer-generated patterns that store or hold a modest amount of data. They do not require a database to store information separately. QR code readers are almost identical in functionalities to bar code readers. Optical Mark Reader OMR The OMR is a type of input device that optically scans the paper and identifies the mark created using a pencil and pen. It is mainly used to verify answers from answer sheets, which include answers to multiple-choice questions. Biometric Devices Biometric devices are used to input a person's scanned data based on biological characteristics, such as facial structures, fingerprints, eye corneas, etc. Most modern smartphones come with the feature of Face Unlock and Fingerprint Unlock, making them a biometric device. However, they can also be standalone devices. Motion Capturing Devices These are the devices used to detect human movements and send them as input to the computer. Such devices are mostly used in advanced gaming setups, which allow players to play a game by moving their body parts accordingly. This technique is also beneficial in animation and robotics. Note There are many more input devices used on computers for performing specific purposes. Some other input devices are Interactive whiteboard, Paddle, Steering wheel, Light gun, VR, Remote, Gesture recognition devices, etc. Summary This article covers 20 examples of input devices used for computers, including their names, pictures, and functions of each. The primary function of an input device is to convert raw data given by users to machine language because computers only understand machine language and not raw input. The input device is known as the electro-mechanical component of a computer system.