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Input Devices

Input Devices. Input. Data or instructions entered into memory of computer Input device is any hardware component used to enter data or instructions. Input - Types. Data Unprocessed text, numbers, images, audio, and video Commands Programs Commands User Responses. Keyboards.

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Input Devices

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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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