KIM-1 7-segment font?

[Don]

Ethan Dicks wrote:
> I'm prototyping an LED display thingie and was trying to find a
> representation of how folks used to do letters on a 7-segment display.
> The two historical examples I came up with were the KIM-1 and a Byte
> magazine article between about 1977 and 1981.  I know there are
> several modern Windows fonts out there, but as they differ somewhat, I
> was hoping to be compatible with what was commonly done in the late
> 1970s.

How were the displays driven?  I.e., were the segments individually
driven (each segment under software control) or were they driven
by a "7 segment LED driver"?  In the latter case, you can lookup
the display pattern created by that driver chip and emulate it.
In the former case, you'd need a definitive source for the
patterns used.  (given that, I can build you a TTF or PS font)