1.3 Input, Output & Storage

• What is an input device?

  Hardware that allows user interaction with a computer
• How do input devices function in a computer system?

  They allow users to input data or commands
• What are the types of input devices?

  • Keyboard
  • Mouse
  • Touchscreen
  • Microphone
  • Webcam
  • Scanner
  • Game Controller
  • Graphics Tablet
  • Biometric Devices
  • Barcode Reader
  • Joystick
• What is the function of a keyboard?

  Input text and commands by pressing keys
• What does a mouse allow users to do?

  Navigate the computer screen and click items
• What is a touchscreen?

  Device that allows interaction by touching the screen
• What is the purpose of a microphone?

  Captures audio input for various uses
• What does a webcam do?

  Captures video input for conferencing or recording
• What is the function of a scanner?

  Digitizes physical documents into a digital format
• What is a game controller used for?

  Controls game characters and interactions
• What does a graphics tablet allow users to do?

  Draw or sketch directly onto a computer
• What are biometric devices used for?

  Verify a user's identity for security
• What is the purpose of a barcode reader?

  Scans barcodes for retail and inventory
• What does a joystick allow users to do?

  Control movement fluidly in computer games
• What is an output device?

  Hardware that presents information to the user
• How do output devices function in a computer system?

  They present results of processed data to users
• What are the types of output devices?

  • Monitor
  • Printer
  • Speakers
  • Headphones
  • Projector
  • Braille Display
  • Plotter
  • Virtual Reality Headset
  • Computer-Controlled Machinery
• What is the function of a monitor?

  Displays visual output from the computer
• What does a printer do?

  Produces hard copies of digital documents
• What is the purpose of speakers?

  Output audio from the computer
• What do headphones do?

  Output audio directly to the user
• What is the function of a projector?

  Projects the computer's display onto a large screen
• What does a Braille display do?

  Outputs information in Braille for visually impaired
• What is the purpose of a plotter?

  Prints large, high-quality diagrams and designs
• What does a virtual reality headset provide?

  Immersive visual and audio output for gaming
• What is the function of computer-controlled machinery?

  Outputs commands to control machinery operations
• What factors should be considered when choosing an input device?

  • User Needs
  • User Skills
  • Environment
  • Cost
• What factors should be considered when choosing a storage device?

  • Storage Needs
  • Performance Needs
  • Portability
  • Cost
• What are secondary storage devices?

  Hardware that retains digital data in a computer
• What are the types of storage?

  • Magnetic
  • Optical
  • Flash
• What is magnetic storage?

  Stores data by magnetizing particles on a disk
• What are the benefits of magnetic storage?

  High capacity and low cost per gigabyte
• What are the drawbacks of magnetic storage?

  Slower speeds and susceptible to physical damage
• What is optical storage?

  Stores data using a laser to burn pits into discs
• What are the benefits of optical storage?

  Durable and easy to transport
• What are the drawbacks of optical storage?

  Lower capacity and can be easily scratched
• What is flash storage?

  Stores data in flash memory cells
• What are the benefits of flash storage?

  Fast speeds and less likely to fail
• What are the drawbacks of flash storage?

  Higher cost per gigabyte and wear out over time
• What are common storage devices and their characteristics?

  • Hard Disk Drive (HDD): Magnetic, 500GB - 2TB, low cost, moderate durability
  • Solid-State Drive (SSD): Flash, 120GB - 4TB, high cost, high durability
  • USB Flash Drive: Flash, 8GB - 256GB, moderate cost, very high portability
  • CD/DVD/Blu-ray Disc: Optical, various sizes, low cost, low durability