Chapter 5

• Microprocessor control devices


  Devices in the home that contain microprocessors to automate tasks
• Advantages of microprocessor control devices

  • They do much of the housework chores for you
  • You don't need to be present while tasks are being completed
  • Allows more time for leisure activities or work
  • Can encourage a healthy lifestyle
  • Provide a sense of security
• Disadvantages of microprocessor control devices

  • Can lead to over-reliance and laziness
  • Can lead to unhealthy eating habits
  • Can lead to deskilling
  • Can reduce social interaction
• How microprocessor control devices work

  1. Sensors monitor conditions

  2. Microprocessor compares readings to preset values

  3. Actuator (e.g. buzzer) is triggered if readings exceed preset value
• Advantages of smoke detectors

  • Can alert you to a fire
  • Can be linked to fire alarm
• Disadvantages of smoke detectors


  • May be triggered accidentally
  • Need to be checked regularly to ensure they are working
• Advantages of security alarms

  • Provide constant protection
  • Act as a deterrent to intruders
• Disadvantages of security alarms

  • May be triggered by mistake
  • Need to remember PIN code to turn off
• Advantages of security lights

  • Illuminate dark areas
  • Act as a deterrent to intruders
• Disadvantages of security lights

  • May be triggered by pets or weather conditions
• Advantages of doorbell cameras

  • Allow you to see and speak to people at your door remotely
  • Record footage
• Disadvantages of doorbell cameras

  • May have limited field of view
  • May be triggered by pets
• Autonomous vehicles


  Vehicles capable of sensing their environment and operating without human involvement
• Advantages of autonomous vehicles

  • Can be great for disabled people
  • Can help with parking
  • Potential to reduce road accidents
• Disadvantages of autonomous vehicles


  • Initial cost may be very high
  • Could lead to more people on the road and increased congestion
  • Could lead to job losses for drivers
  • Security issues with hacking and data loss
  • Potential for machine error
• Repetitive Strain Injury (RSI)


  Aches and pains in the hands and fingers caused by repetitive movements or constant typing/clicking
• Causes of RSI


  • Repetitive movements
  • Constant typing/clicking
• Solutions to reduce RSI


  • Use wrist rest
  • Do hand exercises
  • Take regular breaks
• Strategies to minimize health risks from prolonged computer use

  • Use ergonomic chair
  • Adjust monitor to eye level
  • Use anti-glare screen
  • Take regular breaks
  • Exercise hands and fingers