Peripherals

Peripherals

1. Peripherals are devices which are not parts of the computers core.

2. Peripherals include input hardware,output hardware and storage devices

3. Peripherals connect to the processor hardware through the motherboard .

4. External devices will connect to the motherboard through USB and Firewire

5. Types of inputs

   • Keyboard
   • Mouse
   • Trackball
   • Scanner

6. Wireless Inputs

   • RFID Chips
     • Radio Frequency ID Chips
     • Basic types of wireless communications.When they are passed through a special electrical field ,they broadcast data through high frequency radio waves
     • Used in tracking and identification
   • NFC
     • Near Field Communication
     • NFC is similar to RFID but NFC allows two way communication
     • Used in smartphones and in contactless payment systems
   • Magnetic Strip
     • Different types of cards use magnetic bands to store information
     • Used in Credit Cards, Debit Cards and Security Access Cards
   • Barcode Reader
     • Barcodes are scanned by a reader and the numbers in the code match with records in a database
     • Used to identify Goods and Products

7. Sensors

   • Used in Security,temperature control,motion and eye tracking
   • Motion sensors
     • Motion sensors send a beam of light and can detect if the beam is broken
     • They also use radio and sound waves, which reflect back if blocked
   • Passive Sensors
     • The sensor doesn't send out signals it only receives a signal

8. Outputs

   • Screen
   • Printer
   • Speakers

9. Inputs & Outputs Combined

   • Soundcard
   • Microphone
   • Interactive whiteboard

10. Internal storage

    • Stores the operating system and software applications

11. SSD's VS HDD's

    • Solid State Drive
      • SSD's are about 10 times more expensive than HDD'S
      • SSD's are no larger than 512GB
      • SSD's are almost twice as fast at loading up and copying files
      • SSD's are silent
    • Hard Disk Drives
      • HDD's go up to 4TB
      • HDD's use 3 times more power than SSD's
      • HDD's make spinning disc sounds

12. Optical storage

    • CD's ,DVD and Bluray disks are Optical storage
    • They are useful lightweight media for transporting data and programs

13. Direct and Sequential memory

    • Direct memory is memory known as Random access
    • Sequential storage is slower than Direct Memory

14. Assistive technology

    • Screen Magnifier
    • Screen Readers
    • Eye Tracking
    • Braille keyboard and printer