[sdiy] Art of electronics computer

[David G Dixon]

> I don't know of a direct 'hex' driver chip that takes 4 bit 
> binary and outputs this character set. There ~was~ one (once) 
> for hex on an LCD display.
> 
> The CD4511 is a good example of a driver that will NOT 
> display hex characters. The "a" - "f" are blank...

Yeah, that's what I found.  There were several similar chips, and some of
them put out various symbols for inputs 10 to 15, but none put out A to F.
There was one once, but it is long gone.  Very curious!