IBM Logic IC equivalency information needed

[Christian Corti]

On Sat, 12 Jun 2021, Tony Duell wrote:
> I wonder if in the original list, a '1' was misread as a '7' or vice
> versa. I am told that in some countries the '7' is conventionally
> written with a crossbar across the downstroke to avoid this. My father
> always did this, for all it is not common in England.

In Germany, we *always* write a bar across the 7. I don't like uncrossed 
sevens because they are ugly ;-) and hard to distinguish from a 1.

Christian