well, dust covers are perhaps useless as the CPC lacks mechanical cooling system (ventilator) yet there are still some utility for this.
The drives (Cassettes or Disk) actually have mechanical parts that don't like dust that well. We all know magnetic tape/floppy hate dust.
But of course a good CP user has to open his beloved machine sometime to remove the dust. It just a good excuse to open it to look at the marvelous design of the awesome motherboard.
Yet remember that at the time (80's) you couldn't open your computer if you wanted it to remain warranted. ^^ But I hope your page was simply humoristic and ironic ?--[[User:MacDeath|MacDeath]] 18:07, 23 February 2010 (UTC) :it is both, ironic and serious :cassette and disk drives are inside of the case, it's barely possible that dust creeps in there. and if it does, this would be only a problem in zero-gravity environments, on earth, gravity lets the dust particles drop down before they can't settle on mechanical components. even if some should glue to oiled mechanics - doesn't matter very much :overheating wasn't a problem in eighties, it came up with 66MHz era, whereas these newer "overclocked" computers have ventilators, so the dust gets blown away from hot components. :cleaning a computer every 3 or 5 years is a good idea. warranty is a thing addressed to amateurs, saying "keep your fingers out there". and warranty lasts only a few years anyways.