Have Characters that Depict Electronic Components been Discussed?

[Erik Carvalhal Miller]

On Tue, Aug 13, 2024 at 5:14 PM Jim DeLaHunt via Unicode
<unicode at corp.unicode.org> wrote:
> I am not aware of a discussion of encoding symbols for electrical schematics in Unicode. I am however aware of numerous proposals to encode various graphical symbols in general in Unicode. Those proposals, and the arguments against them, are so common that there are sections of The Unicode Standard and of the Emoji process which describe what gets encoded and what does not.
>
> Consider (re-)reading the following:
>
> The Core Specification of The Unicode Standard, section 2.2 Unicode Design Principles <https://www.unicode.org/versions/Unicode15.0.0/ch02.pdf>. Consider especially the principles "Plain text" and "Characters, not glyphs".
> Guidelines for Submitting Unicode® Emoji Proposals, especiall the "Selection Factors" section <https://www.unicode.org/emoji/proposals.html#selection_factors>

Rather on point, regarding not so much the elaboration of those
principles as their application, would be the following tidbit, from
The Unicode Standard, chapter 22, §22.7 “Technical Symbols”, under
“Miscellaneous Technical: U+2300–U+23FF” on pg. 884 (pg. 41 of
https://www.unicode.org/versions/Unicode15.0.0/ch22.pdf):
 ❝ This block encodes technical symbols, including keytop labels such
as U+232B ERASE TO THE LEFT. Excluded from consideration were symbols
that are not normally used in one-dimensional text but are intended
for two-dimensional diagrammatic use, such as most symbols for
electronic circuits. ❞