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Input Devices: Keyboards, Pointing Devices, Scanners, RFID, Audio and Video Inputs

Learn about various types of input devices such as keyboards, pointing devices, scanners, RFID, audio, and video inputs, and how they are used to enter data and instructions into a computer.

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Input Devices: Keyboards, Pointing Devices, Scanners, RFID, Audio and Video Inputs

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  1. Input Devices

  2. Input • Data or instructions entered into memory of computer • Input device is any hardware component used to enter data or instructions

  3. Input - Types • Data • Unprocessed text, numbers, images, audio, and video • Commands • Programs • Commands • User Responses

  4. Keyboards CMPTR Chapter 2: Computer Hardware

  5. Keyboards - Types Standard Ergonomic Wireless Notebook Handheld On Screen CMPTR Chapter 2: Computer Hardware

  6. Pointing Devices • Pointing devices are used to • select and manipulate objects • input certain types of data • to issue commands to the computer.

  7. Pointing Devices • Wheel Mouse • Optical Mouse • Trackball • Touch Pad • Touch Screen • Stylus – Two Types • Standard • Inductive

  8. Scanners • A scanner captures an image of a flat object in digital form and transfers that data to a computer. • The quality of scanned images is indicated by optical resolution, usually measured in the number of dots per inch (dpi). CMPTR Chapter 2: Computer Hardware

  9. Flatbed Pen or Handheld Sheet-fed Drum Scanners - Types

  10. Optical Readers • Device that uses light source to read characters, marks, and codes and then converts them into digital data • OMR • Bar Code CMPTR Chapter 2: Computer Hardware

  11. Magnetic-Ink Character Recognition (MICR) • Banking industry almost exclusively uses MICR for check processing

  12. RFID • Radio frequency identification (RFID) is a technology that can store, read, and transmit data located in RFID tags. • RFID tags • contain tiny chips and radio antennas • can be attached to objects, such as products, price tags, shipping labels, ID cards, assets, and more. • The data in RFID tags is read by RFID readers. CMPTR Chapter 2: Computer Hardware

  13. Audio Input • Audio input is the process of entering audio data into the computer. • Speech recognition systems enable the computer to recognize voice input as spoken words and require appropriate software. • Music input systems are used to create an original music composition or arrangement, or to create a custom music CD. CMPTR Chapter 2: Computer Hardware

  14. Video Input • Process of entering full-motion images into computer • Video can come form; • Digital Video Recorders • Web Cams

  15. Biometric Input • Authenticates person’s identity by verifying personal characteristic • Fingerprint scanner • Hand geometry • Voice verification • Iris recognition • Facial recognition

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