On Thu, Feb 18, 2016 at 11:23 AM, Nicklas Karlsson <nicklas.karlsso...@gmail.com> wrote:
> I guess it would be possible to position an ordinary disc read head quite > accurate. Either one for DVD/CD or magnetic. How many bits are stored per > turn? > Those devices use the data that is recorded on the spinning platter to determine where the read head is. The head is then served to follow the track. It works well enough that is the spindle bearing is loose the head can follow the track as it wobbles The CD/DVD track is a long spiral (alike on a vinyl record) so the head must continually move if it is to read. All of these are not very good at absolute positioning -- Chris Albertson Redondo Beach, California ------------------------------------------------------------------------------ Site24x7 APM Insight: Get Deep Visibility into Application Performance APM + Mobile APM + RUM: Monitor 3 App instances at just $35/Month Monitor end-to-end web transactions and take corrective actions now Troubleshoot faster and improve end-user experience. Signup Now! http://pubads.g.doubleclick.net/gampad/clk?id=272487151&iu=/4140 _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
