Re: World-wide 8-bit computer sales (all-time)?

["Randy McLaughlin" <randy@nospam.com>]

"Wayne Stewart" <waynes@telus.dotnet> wrote in message
news:3F0248D2.90402@telus.dotnet...
>
>
> Sam Gillett wrote:
>
> > IMHO, the drives in a Mac have enough shielding to protect data from any
> > degaussing that occurs at power-on time.
> >
> > In the case of a monitor sitting on top of a desktop unit, the metal
case of
> > the computer provides additional shielding.
> >
> > But, it is still a bad idea to sit a box of disks on top of your color
> > monitor.  Even if that monitor is attached to a C64 or other classic
home
> > computer.
>
> When I started with computers I read about all these things you
> shouldn't do. But I always liked to experiment. Keep disks away
> from magnets -- stuck one to the fridge with a big magnet for a
> couple of years, still worked fine. Keep disks away from monitors
> -- had some tight against one for several years, still worked.
> Don't put your disks on an Apple Graphics tablet -- that wiped the
> disks clean!!
>
> Wayne

A static magnetic field may not erase a disk it is a flux that alters
(erases) the disk.  Add to that the data on the disk is recorded on very
small pieces of iron, some disks had larger iron pieces and required more
energy to charge them (write/erase).