Chapter 5 input

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Chapter 5 input

  1. 1. Input DevicesSlides By Rana Usman SattarStudent Of BBA(Hons)PMAS Arid Agriculture University RawalpindiGmail: ranaa.usman@gmail.comFacebook: usman.shan86@yahoo.com
  2. 2. What Is Input? Input is any data and instructions entered into the memory of a computer An input device is any hardware component that allows users to enter data and instructions (programs, commands, and user responses) into a computer. Depending on the application and your particular requirements, the input device selected may vary.
  3. 3. The Keyboard A keyboard is an input device that contains keys users press to enter data and instructions into a computer Keyboard Ergonomics ◦ Design that reduces the chance of wrist and hand injuries Keyboards for Mobile Computers and Mobile Devices
  4. 4. Pointing Devices A pointing device is an input device that allows a user to control a pointer on the screen. In a graphical user interface, a pointer is a small symbol on the screen Mouse Trackball Touchpad Pointing Stick
  5. 5. Touch Screens and Touch-Sensitive Pads Touch screens that recognize multiple points of contact at the same time are known as multi-touch. ◦ Laptop ◦ Notebook ◦ Kiosk ◦ Mobile & Tablets ◦ Microsoft Surface Touch-Sensitive Pads Pen Input
  6. 6. Game Controllers Video games and computer games use a game controller as the input device that directs movements and actions of on-screen objects Gamepads Joysticks and Wheels Light Guns Dance Pads Motion-Sensing Game Controllers
  7. 7. Digital Cameras A digital camera is a mobile device that allows users to take pictures and store the photographed images digitally, instead of on traditional film. Digital Camera Photo Quality ◦ Resolution is the number of horizontal and vertical pixels in a display device. A pixel (short for picture element) is the smallest element in an electronic image
  8. 8.  Voice input is the process of entering input by speaking into a microphone Audio input is the process of entering any sound into the computer such as speech, music, and sound effects. Video input is the process of capturing full-motion images and storing them on a computer’s storage medium such as a hard disk or optical disc. A Web cam also called a PC video camera is a type of digital video camera that enables a home or small business user to capture video and still images
  9. 9. Scanners and ReadingDevices An optical scanner, usually called a scanner, is a light-sensing input device that reads printed text and graphics and then translates the results into a form the computer can process. A flatbed scanner works in a manner similar to a copy machine except it creates a file of the document in memory instead of a paper copy
  10. 10. Optical Readers An optical reader is a device that uses a light source to read characters, marks, and codes and then converts them into digital data that a computer can process. Optical character recognition (OCR) Optical mark recognition (OMR) Bar Code Readers RFID Readers MICR Readers Magnetic Stripe Card Readers
  11. 11. Biometric Input Biometrics is the technology of authenticating a person’s identity by verifying a personal characteristic. hand geometry voice verification system signature verification system Iris recognition system Finger Scanning
  12. 12. Terminals A terminal is a computer, usually with limited processing power, that enables users to send data to and/or receive information from a host computer. Point-of-Sale Terminals Automated Teller Machines

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