I've been wondering, what would be involved in having a computer interpret
and display gauge readings.

By this I mean something such as having a laptop receiving inputs from the
various gauge sending units such as oil pressure, engine temp etc. and then
displaying them in some way.

I don't believe this is something I would actually do, it's just I was on a
long drive yesterday and it got into my head and I would really like to
figure it out.

I've googled unsuccessfully (I'm ashamed to admit) so if anyone can point me
in a direction ...