Re: Apple II keyboard encoder MM7540AAF

["Michael J. Mahon" <mjmahon@aol.com>]

Mike Willegal wrote:
> They are standard parts made by National.   National did offer custom 
> mask programming of the same devices.  Apple used the standard AAE 
> version, mass produced by National.  I made a mistake on the part 
> number, it should be MM7540AAE, not AAF - though I'm not sure what the 
> difference is (my data sheet shows the same program in both of them).

Thanks for correcting me--it makes sense that a small startup would pick
an off-the-shelf encoder.  ;-)

-michael

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