[sdiy] Rotary encoder

[Cary Roberts]

>> However, as 74C922 are pretty expensive ($7.50 even at Futurlec),
>> it's probably
>> not an ideal solution...
>>
>
>Still a brilliant idea, IMHO.
>It's also handy if one wants to interface a 12 position switch to a
>microcontroller. 7 I/O ports versus 12.

Excuse my ignorance, but how is this brilliant?  Using an obsolete
expensive part in place of a microcontroller that costs less than a 10th
as much seems absurd.  It's one thing when DIY focused sites use
discrete logic as their target market doesn't typically have the ability
to program a microcontroller.  If there is already a microcontroller
used in the project or it's a commercial project a port expander or
second microcontroller makes more sense.

-Cary