AVR-Chat

--- In AVR-Chat@yahoogroups.com, David Kelly <dkelly@...> wrote:

> There is a lot of debate as to
> how a CRC should be calculated.

I think this is true only in circles where the precise meaning of "CRC" is not understood.  The mathematics of cyclic redundancy checks has been extensively studied and optimal solutions exist for just about any situation you can imagine.

On the other hand, people are inclined to use the term CRC to mean any kind of redundant data transmitted or stored along with any piece of data that may be received or recovered with errors.  A checksum, for example, is much easier to compute than a CRC but offers inferior protection against errors.  This, I think, is where the debate happens.

Graham.