Cheap Thumbwheel Switches

[Byron G. Jacquot]

Whoops---replied privately to Harry rather than the list:

>There are obvious uses for these.
>Use  1-2-4-8 resistors and get an attenuator that covers 16 steps.

Use 16 of them (maybe with R2R networks on the tail end), and drive them
from a 4:16 demux, and you could have a 16-step sequencer that's handily
tuned to half steps!

Probably a tricky way to use 'em to set the "last step" on a traditional
analog sequencer, much handier than a switch on every single column!

To which Harry replied:
>Not tricky at all... use a magnatude comparator CD4585 or similar... and
>compare the Thumbwheel setting with the binary address of the sequencer...
>output is a reset pulse to the address generator !


Byron Jacquot