Devices

Devices

1. Input

   • Keyboard
     • Causes RSI
     • Type commands and letters to into the computer
     • The most common device for inputting information to the computer
   • Mouse
     • Causes RSI
     • Difficult to handle in high accleration
     • Ease of use for computer
   • Scanner
     • Scanns physical documents into the computer digitally
     • Light can damge the eyes in excessive use
     • Comes usually with a printer for ease of use
   • Joystick
     • Used releated to gaming
     • Causes RSI
     • Newer deigns are comfortable and wireless which causes addiction
   • Microphone
     • Used to input sound
     • Spying on people
     • Used to record sound

2. Output

   • Head phones
     • Unconnected with the wolrd
     • Enhances audio information
     • Can be used in public compared to speaker
   • Screen
     • Output digital images or videos
     • Starring at it from close distance can cause eye problems
     • Newer screen's are delicate and easily damged
   • Laser printer
     • Used for fast document printing
     • Contains high-voltage components e.g danger when cleaning
     • Larger printers which require many fans make a lot of sound
   • Inkjet printer
     • Used in homes for printing documents
     • Cheaper than laser printer
     • Easy to use
   • Plotter
     • Main use is to print designs which require a lot of space
     • Usually require an expert to handle and maintain the machine
     • Sometimes incompatible with certain pdf files
   • Speakers
     • Outputs loud sound to everyone present
     • Loud sound can cause damage to the ear
     • Can annoy neighbours if used incorrectly
   • Projector
     • Display images onto a surface
     • Primary use: for presentations
     • Might hurt the presenter's eyes

3. Touch Screen

   • Enables the user to directly intefere with the CPU
   • Excessive use leads to anti- social behaviour
   • Usually mobile so accessible anywhere

4. Webcam

   • Used for spying
   • Input real world images and videos into computer
   • Monitoring security

5. Smart board

   • Used in classes for teaching purposes
   • Currently best and most used method for teaching
   • Troubleshooting problems require an expert

6. Modem

   • Receives and sends data, usually at the same time
   • Main use for transmitting analog signals
   • Outdated now days because of better transmitting devices