<snip>
> Better: a part attribute that specifies alpha or numeric part designation.
> But that would not be as easy to implement. An easier-to-implement
> compromise would automatically use A-Z for up to 26-section components --
> if alpha is selected under Preferences --, and would revert to numeric
> section numbering if there were more than 26 sections to the part.
<snip>
> Abdulrahman Lomax
A method that could be used (is it used in fact?) in cases where a component
has more than 26 sections is to use the "spread-sheet" (column-) designating
scheme: after Z comes AA, then AB, etc; after AZ comes BA, then BB, etc.
(Spreadsheets run as far as "IV", which is the 256th column with this
designating protocol.)
DOS versions of Protel's Schematic Editor applications supported users being
able to edit the properties of pins within each component (section),
including adding and deleting pins, and changing the properties of each
existing pin, including their designator, visibility, type (input, output,
etc) and location. A good case could be made for saying that we would not
such capability to be restored in its *entirity*, but perhaps there is
something to be said for *partially* restoring this capability, to the
extent of permitting users to *reposition* pins. This would preserve *other*
properties of each pin, like their type, number, and visibility, while
facilitating the creation of schematic files with an "optimal" layout of
tracks, e.g. with a reduced/minimum number of intersecting tracks. It would
also be consistent with aspirations to support "automated updating" of
schematic files (in cases where a component uses just *one* section, instead
of many) following pin-swapping procedures within the corresponding PCB
file.
A big can of worms, but still within the realms of the possible...
Regards,
Geoff Harland.
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