Computing Hw

Computing Hw

1. Input devices

   • Keyboard
     • lets you type on a computer
   • mouse
     • moves the cursor on the computer
   • Webcam
     • Records video
   • Microphone
     • Records audio
   • Sip and puff
     • allows people with limited arm movement to use the mouse

2. Output Devices

   • Monitor
     • Displays what is happening on the computer
   • Printer
     • Allows you to print documents
   • Speakers
     • plays audio
   • Screen magnifiers
     • Allows people with limited eyesight to see things on the screen easier

3. Secondary storage

   • This is needed to save documents and data even after the computer has lost power
   • Optical
     • This is used by making marks in a pattern that can be read back
   • Solid state
     • Faster than hard disks because of zero latency
   • Magnetic
     • System of aligned grains in a magnetic material