Re: [CAD_CAM_EDM_DRO] Just How Accurate Is CNC?

At 22:46 09/11/2004, Chuck Rice wrote:

>So 150 fs = 0.000150 ns
>
>A crystal 20 MHz PIC can run at 5,000,000 instructions per second.
>Doesn't that give a headway of 75 instructions per required resolution?
>Perhaps my math is off, but if not, with a PIC chip, you can do a
>lot in 75 instructions.

'Fraid your math is way off. At the time intervals Major A was talking
about the PIC might as well be stopped.

Yes, a PIC can do a great many things in 75 instructions; however, I'm
sorry to say that changing the laws of Physics isn't one of them ;-)


Regards,
Tony