User Manual for the Zuse Z4 Discovered (2020)

[vallassy]

https://cacm.acm.org/blogs/blog-cacm/247521-discovery-user-manual-of-the-oldest-surviving-computer-in-the-world/fulltext

[vallassy]

Also see the link at the bottom of the page for an English translation by Fredrik Andersson [PDF]

https://nablaman.com/relay/download/Z4.pdf

[adrian_b]

The original in German is at:

https://archive.org/details/bedienungsanweisung-fur-zuse-z-4...

[fuzzfactor]

Nice to see the English translation.

Here's info about digital representation of binary numbers:

>Since numbers are punched using the full 24 binary digits, they will be preserved for use in later computations. Otherwise the required translations back and forth would . . . soon drift out of integerness.

This is like a very early warning for floating point enthusiasts.

[dang]

Offtopic: since I had no way to email a repost invite for https://news.ycombinator.com/item?id=38972831, I made a fresh copy of it. I hope that's ok!