Input & Output Devices

• What are input devices used for?

  To enter data into a computer system
• What are some examples of input devices?

  • Keyboard
  • Mouse
  • Sensor
  • Touchscreen
  • Microphone
  • Scanner
  • Digital Camera
• How does a keyboard function as an input device?

  It allows typing data like a typewriter
• What is the layout of keys on a keyboard called?

  QWERTY
• What is the primary function of a mouse?

  To control a cursor and select items
• What is a common feature of computer mice?

  At least one button
• What does a sensor do?

  Detects changes in the physical environment
• How might a motion sensor be used in a home?

  To detect movement and trigger an alarm
• What is a touchscreen?

  An input device that responds to touch
• What is the function of a microphone?

  To capture audio and convert it to signals
• Why are microphones increasingly popular?

  Due to vlogging and VoIP services
• What does a scanner do?

  Captures images from documents
• What are the two main types of scanners?

  Flatbed and sheet-fed scanners
• How does a digital camera differ from a film camera?

  Stores images digitally for transfer
• What is a common use for webcams?

  To live stream video online
• What are output devices used for?

  To communicate data with users or systems
• What are some examples of output devices?

  • Printer
  • Speakers
  • Force Feedback
  • Actuator
  • Screen
  • Projector
  • Robotic Arms
• What is the primary function of a printer?

  To produce text and images on paper
• What are the three major types of printers?

  Impact, inkjet, and laser
• How do speakers function?

  They convert electronic signals to sound waves
• What is force feedback in gamepads?

  It provides tactile feedback during gameplay
• What do actuators do?

  Turn energy into motion
• How do actuators relate to sensors?

  They often work together in systems
• What is the primary output of a screen?

  Visual images of the computer interface
• How have screens evolved over time?

  From heavy CRT to lightweight LCD monitors
• What is the function of a projector?

  To display images on a larger surface
• What are robotic arms used for?

  Controlled machinery in manufacturing
• What is the goal of a technology system?

  • Receive input
  • Process that input
  • Produce output
• What are multi-functional devices?

  • Devices that serve multiple functions
  • Examples: Touchscreen, force feedback gamepad