The Origins of APL (1974) [video]

This submission popping back up from the second chance pool got me to do some digging for the formal description of system/360[0], this is not the APL we know today but the APL outlined in Iverson's A Programming Language[1].

[0] https://www.cs.trinity.edu/~jhowland/class.files.cs2321.html...

[1] https://www.jsoftware.com/papers/APL.htm

9-track tape drives, drum disks, rectangular switches and lights, IBM "THINK" logo, fast card readers ... all bring back many personal memories.

I went to the Hampshire College Summer Studies in Mathematics in 1979, where we learned APL with all its glorious obscure characters and overstrikes. Lots of fun.

In the intro I liked the precursors to the IBM "Thinkpad" name.