On 12/03/2011 16:47, Oli Glaser wrote:
> Yes, I have just finished a project using a 16F690 with PID control of a
> heating element which used floating point. No problems regarding speed,
> with various other stuff (one wire, LCD, buttons etc) going on, works fin=
e.
PID heating is a good example as the system response time is very slow.=20
In the early 1980s Westinghouse had PID controllers with 8085, 8051 and Z80=
..

But DSP at 12kHz or Graphics panel on PIC or such some form of Fixed=20
point alternatives to Floating point are usually far better. FPGAs=20
usually use Fixed point for all DSP.

it depends what the Floating point is for and how much how fast is needed.
--=20
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