[sdiy] Midwest Analog Product Books, any reviews?

[Roy J. Tellason]

On Sunday 26 September 2004 08:05 pm, john mahoney wrote:
> I bought Thomas Henry's 566 book because I ended up with some of those
> oft-maligned chips in some grab bags. (Not 556, not 565, but the
> obsolete 566 VCO/Function Generator.)

Speaking of which,  I got one of those chips too,  in a similar situation -- 
in a bag of miscellaneous parts.  What's it good for?