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Ouput devices (Printers (Dot Matrix printer (Advantage (Low operating cost…

- - - - Low operating cost
      - Can print on continuos stationery
      - Robust and wll work well in harsh or dirty conditions such as garages or factories
    - - Can't produce graphical images
      - They produce a lot of noise
      - Colour printing can be extremely slow
  - - - High quality printouts
      - Cost per page is low when printing in black and white
      - Fast printouts
    - - Have a high start-up cost
      - Expensive to print in colour
      - Use more electrical power than other printers
  - - - Cheap to buy compted to laser printer
      - Cartridge cost less to replace compared to toners
      - Produce good wuality printouts better than dot matrix but not as good as laser
    - - Makes a lot of noise whilst printing
      - Colour printing can be extremeley slow
      - Ink will smudge whilst it's still wet
  - - - Drawings are of the same quality as if an expert drew them
      - Larger sizes of paper can be used than most printers can manage
    - - Plotters are slower than printers because each line is drawn seperately
      - They are often more expensive than printers
      - They do not produce very high quality text printouts
  - - - Initial cost
      - Space saving
    - - Only ptrints in black and white
      - HIgh costs
      - Maintenance
  - - - Quick and easy to produce
      - Reduces wastage
      - Plates are not required therefore numbers,designs,etc can be changed
    - - Substrates need to be polyster coated
      - Printers tend to clog if not used for a certain amount of time
      - Substrated need to be white or light
  - - - Little recepit therefore can get lost quickly
      - Labels tend to fade overtime
      - Printings tend to be slow
    - - High quality output
      - Small device therefore less space is needed
      - No issues with ribbons wrinking when printing
- - - - Cheap
      - Colour and greyscale accuracy
      - Highest resolutions
    - - takes a lot of space on a desk
      - Display screen isn't flat
      - Sharpness is very low
  - - - Sharpness - image is sharp
      - Screen shape - It is perfectly flat
      - Thin with small foorpirit. Consume less electricity and produce less heat
    - - Limited viewing angle
      - LCDs have difficulty producing balck and very dark grays
      - Expensive
  - - - Takes up less space on desks
      - Clear screen so there will be less issues in order to read things off the screen
      - Low power consumption
    - - The brightness may prove inadequate in certain specific use
      - Expensive
      - The colours are not always correctly transcribed
- - - - Colours are more bright and clear to see
      - The chromatic range of plasma screens is broader than for CRT television sets
      - Very high quality
    - - The size of pixel is large
      - Plasma TV doesn't exist under 42"
      - Expensive
  - - - Touchscreen devices usually have more simple user interfaces, ex.ipod apps
      - For those who are worried about hygiene, most devices are easy to clean,some are even dirt,dust and grease resistant
      - For those who are uncomfortable with normal desktops,touchscreen are easy to use helping more people get used to using computers
    - - The screen has to be big enough to be able to touch the buttons without missing
      - Having a big bright screen and needing massive computing power to run this means a very low battery life
      - The screens will get very dirty
  - - - Need seperate speakers in order to hear everything clearly
      - A room has to be dark in order to see the screen clearly,therefore light is a problem
      - Expensive
    - - Large viewing screen
      - Can save space as it can be mounted on the ceiling
      - Easy to use
- - - - It's portable and has accesible ports, which makes it perfect for students and business people who need to use a computer while on tthe move
      - They have lower power and space requirement than desktops, thus conserving electricity
    - - Cost to repair
      - Expensive
      - Small and not much graphical
  - - - Some of them are expensive
      - Can break easily
      - Risk of damaging ears if music is too loud
    - - Light weight
      - Sound can only be head by the user
      - Portable
- - - - Can be dapted easily to say whatever users want them to say
      - Offer a range of different accents and voices,whereas systems that use pre-recorded human voices may offer on or two
    - - Can sound unnatural
      - Most natural speech need considerable resources in terms of data storage and proessing power