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InputDevices      INPUT DEVICES - Harman Grewal   1
What Is Input?• Input is any data and instructions entered into the  memory of a computer.                                ...
What Is Input?                             An input device                             is any hardware                    ...
Keyboard                                           4           INPUT DEVICES - Harman Grewal
Keyboard• Most desktop computer keyboards have…                                                  5                  INPUT ...
INPUT DEVICES - Harman Grewal   6
Keyboard Types:1. QWERTY keyboardPronounced kwer-tee, refers to the arrangement  of keys on a standard English computer k...
Keyboard Types2. DVORAK keyboardis designed so that the middle row of keys  includes the most common letters. In  additio...
Keyboard Types QWERTY keyboard                  DVORAK keyboard                                                    9      ...
Connection Keyboards1. Wireless KeyboardsThese use three basic types of connections:• Bluetooth - is a wireless technology...
Connection Keyboards   Bluetooth                  Infrared                                               Radio Frequency  ...
Connection Keyboards2. Wired Keyboards• PS/2 (Personal System/2) - is an electronic receptacle or   plug found on computer...
Connection Keyboards               INPUT DEVICES - Harman Grewal   13
Pointing Devices                                               14               INPUT DEVICES - Harman Grewal
Pointing Devices• A mouse is a pointing device that fits under the  palm of your hand comfortably.  – Most widely used poi...
Pointing Devices                                      Touchpad                                                            ...
Touch Screens and Touch-Sensitive Pads• A touch screen is a touch-sensitive display device.                               ...
Pen Input• With pen input, you touch a stylus or digital pen on a flat  surface to write, draw, or make selections.       ...
Touch Screens and Touch-Sensitive PadsMicrosoft Surface       •      Microsoft Surface is an                              ...
Touch Screens and Touch-Sensitive Pads Touch-Sensitive Pad                                 a specialized surface that     ...
Other Types of Input• Video games and computer games use a game controller  as the input device that directs movements and...
INPUT DEVICES - Harman Grewal   22
Other Types of Input• A digital camera is a mobile device that allows  users to take pictures and store them digitally.   ...
INPUT DEVICES - Harman Grewal   24
Other Types of Input                                               25               INPUT DEVICES - Harman Grewal
Other Types of Input• Two factors affect the quality of digital camera photos:                         • Resolution refers...
Other Types of Input• Voice input is the process of entering input by  speaking into a microphone.• Voice recognition is t...
INPUT DEVICES - Harman Grewal   28
Other Types of Input• Music production software allows users to  record, compose, mix, and edit music and sounds.         ...
Other Types of Input• Video input is the process of capturing full-motion images and  storing them on a computer’s storage...
Video: Video Editing on Your Computer                                               31               INPUT DEVICES - Harma...
Other Types of Input• A Web cam is a video camera that feeds its  images in real time to a computer. It enables a  user to...
Other Types of Input• A video conference is a meeting between two or  more geographically separated people.               ...
Other Types of Input• A scanner creates a file of the document in  memory.  – Works in a manner similar to a copy machine....
Other Types of Input• Optical character recognition (OCR) involves reading  characters from ordinary documents.• A turnaro...
Other Types of Input • Optical mark recognition (OMR) reads hand-drawn   marks such as small circles or rectangles.       ...
Other Types of Input                           • A bar code reader, also                             called a bar code    ...
Other Types of Input       Magnetic stripe      card reader reads         the magnetic      stripe on the back       of ca...
Magnetic Stripe Cards                                               39               INPUT DEVICES - Harman Grewal
Other Types of Input• MICR (magnetic ink character recognition) devices read text  printed with magnetized ink.• An MICR r...
Other Types of Input• Biometrics authenticates a person’s identity by  verifying a personal characteristic such as:       ...
INPUT DEVICES - Harman Grewal   42
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Input Devices

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Input Devices

  1. 1. InputDevices INPUT DEVICES - Harman Grewal 1
  2. 2. What Is Input?• Input is any data and instructions entered into the memory of a computer. 2 INPUT DEVICES - Harman Grewal
  3. 3. What Is Input? An input device is any hardware component that allows users to enter data and instructions into a computer. 3 INPUT DEVICES - Harman Grewal
  4. 4. Keyboard 4 INPUT DEVICES - Harman Grewal
  5. 5. Keyboard• Most desktop computer keyboards have… 5 INPUT DEVICES - Harman Grewal
  6. 6. INPUT DEVICES - Harman Grewal 6
  7. 7. Keyboard Types:1. QWERTY keyboardPronounced kwer-tee, refers to the arrangement of keys on a standard English computer keyboard or typewriter.The term comes from the fact the first 6 letters of the top row of keys are Q, W, E, R, T, and Y.The QWERTY design was patented by Christopher Sholes in 1874. 7 INPUT DEVICES - Harman Grewal
  8. 8. Keyboard Types2. DVORAK keyboardis designed so that the middle row of keys includes the most common letters. In addition, common letter combinations are positioned in such a way that they can be typed quickly.The Dvorak keyboard was designed in the 1930s by August Dvorak, a professor of education, and his brother-in-law, William Dealy. 8 INPUT DEVICES - Harman Grewal
  9. 9. Keyboard Types QWERTY keyboard DVORAK keyboard 9 INPUT DEVICES - Harman Grewal
  10. 10. Connection Keyboards1. Wireless KeyboardsThese use three basic types of connections:• Bluetooth - is a wireless technology for exchanging data over short distances.• Infrared (IR) - radiation is a type of electromagnetic radiation (a wave with electricity) .• Radio Frequency - band of frequencies that lie in the range 10 kilohertz to 300 000 megahertz and can be used for radio communications and broadcasting. 10 INPUT DEVICES - Harman Grewal
  11. 11. Connection Keyboards Bluetooth Infrared Radio Frequency 11 INPUT DEVICES - Harman Grewal
  12. 12. Connection Keyboards2. Wired Keyboards• PS/2 (Personal System/2) - is an electronic receptacle or plug found on computers.- It accepts a PS/2 cable with a mini-DIN connector, and is most often used to plug in a keyboard or mouse.• USB (Universal Serial Bus) - is a standard cable connection interface on personal computers and consumer electronics.- allows stand-alone electronic devices to be connected via cables to a computer (or to each other). 12 INPUT DEVICES - Harman Grewal
  13. 13. Connection Keyboards INPUT DEVICES - Harman Grewal 13
  14. 14. Pointing Devices 14 INPUT DEVICES - Harman Grewal
  15. 15. Pointing Devices• A mouse is a pointing device that fits under the palm of your hand comfortably. – Most widely used pointing device on desktop computers.• A mouse can be wired or wireless. 15 INPUT DEVICES - Harman Grewal
  16. 16. Pointing Devices Touchpad Pointing Stick • A touchpad is a • A pointing stick is aTrackball • A trackball is a stationary pointing small, flat, rectangular pressure-sensitive device with a ball on pointing device that is pointing device its top or side. sensitive to pressure shaped like a pencil and motion. eraser that is positioned between keys on a keyboard. 16 INPUT DEVICES - Harman Grewal
  17. 17. Touch Screens and Touch-Sensitive Pads• A touch screen is a touch-sensitive display device. 17 INPUT DEVICES - Harman Grewal
  18. 18. Pen Input• With pen input, you touch a stylus or digital pen on a flat surface to write, draw, or make selections. 18 INPUT DEVICES - Harman Grewal
  19. 19. Touch Screens and Touch-Sensitive PadsMicrosoft Surface • Microsoft Surface is an upcoming series of tablets designed and marketed by Microsoft. • Microsoft Surface is with a high-end graphics display that is built into something similar to a coffee table. And users interact with the applications by using only their fingers and other objects. INPUT DEVICES - Harman Grewal 19
  20. 20. Touch Screens and Touch-Sensitive Pads Touch-Sensitive Pad a specialized surface that can translate the motion and position of a users fingers to a relative position on screen. 20 INPUT DEVICES - Harman Grewal
  21. 21. Other Types of Input• Video games and computer games use a game controller as the input device that directs movements and actions of on-screen objects. Gamepad Joystick Light gun Dance Wii pad Remote 21 INPUT DEVICES - Harman Grewal
  22. 22. INPUT DEVICES - Harman Grewal 22
  23. 23. Other Types of Input• A digital camera is a mobile device that allows users to take pictures and store them digitally. Studio camera Field camera Point-and-shoot camera 23 INPUT DEVICES - Harman Grewal
  24. 24. INPUT DEVICES - Harman Grewal 24
  25. 25. Other Types of Input 25 INPUT DEVICES - Harman Grewal
  26. 26. Other Types of Input• Two factors affect the quality of digital camera photos: • Resolution refers to the number of pixels in an image. • Pixel is a tiny dot that Resolution make up the representation of an image in a computers memory. 26 INPUT DEVICES - Harman Grewal
  27. 27. Other Types of Input• Voice input is the process of entering input by speaking into a microphone.• Voice recognition is the computer’s capability of distinguishing spoken words.• Audio input is the process of entering any sound into the computer. 27 INPUT DEVICES - Harman Grewal
  28. 28. INPUT DEVICES - Harman Grewal 28
  29. 29. Other Types of Input• Music production software allows users to record, compose, mix, and edit music and sounds. 29 INPUT DEVICES - Harman Grewal
  30. 30. Other Types of Input• Video input is the process of capturing full-motion images and storing them on a computer’s storage medium. Record video on a digital video (DV) camera or use a video capture card to convert analog signals to digital. Connect the camera to a port on the system unit. Transfer video and images. 30 INPUT DEVICES - Harman Grewal
  31. 31. Video: Video Editing on Your Computer 31 INPUT DEVICES - Harman Grewal
  32. 32. Other Types of Input• A Web cam is a video camera that feeds its images in real time to a computer. It enables a user to: Send e-mail messages with video Capture video and still images attachments Add live images to instant messages Broadcast live images over the Internet Make video telephone calls 32 INPUT DEVICES - Harman Grewal
  33. 33. Other Types of Input• A video conference is a meeting between two or more geographically separated people. 33 INPUT DEVICES - Harman Grewal
  34. 34. Other Types of Input• A scanner creates a file of the document in memory. – Works in a manner similar to a copy machine. 34 INPUT DEVICES - Harman Grewal
  35. 35. Other Types of Input• Optical character recognition (OCR) involves reading characters from ordinary documents.• A turnaround document is a document you return to the company that creates and sends it. 35 INPUT DEVICES - Harman Grewal
  36. 36. Other Types of Input • Optical mark recognition (OMR) reads hand-drawn marks such as small circles or rectangles. 36 INPUT DEVICES - Harman Grewal
  37. 37. Other Types of Input • A bar code reader, also called a bar code scanner uses laser beams to read bar codes. 37 INPUT DEVICES - Harman Grewal
  38. 38. Other Types of Input Magnetic stripe card reader reads the magnetic stripe on the back of cards such as: Credit cards Entertainment cards Bank cards Other similar cards 38 INPUT DEVICES - Harman Grewal
  39. 39. Magnetic Stripe Cards 39 INPUT DEVICES - Harman Grewal
  40. 40. Other Types of Input• MICR (magnetic ink character recognition) devices read text printed with magnetized ink.• An MICR reader converts MICR characters into a form the computer can process.• Banking industry uses MICR for check processing. 40 INPUT DEVICES - Harman Grewal
  41. 41. Other Types of Input• Biometrics authenticates a person’s identity by verifying a personal characteristic such as: Face Hand Fingerprint Recognition Geometry Reader System System Voice Signature Verification Retinal Verification System Scanner System 41 INPUT DEVICES - Harman Grewal
  42. 42. INPUT DEVICES - Harman Grewal 42

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