On 15/02/2019, Lawrence Stewart <stewart at serissa.com> wrote (in part):
> In addition to Algol-W and Pascal. Niklaus Wirth also developed Modula-2 and
> Oberon.
> Oberon is particularly interesting because it included a language, an
> operating system, and a computer.  There aren’t that many folks who could
> build a complete environmnet from scratch.

He also devised an HDL before switching to Verilog.  (The original
Oberon UI influenced Pike's acme, though Pike thought Wirth was too
minimalist.)

At any rate, this page has a picture of Auld Nick (as some wags called
him) in his lab with board and helicopters:
https://www.srf.ch/radio-srf-3/digital/computer-pionier-niklaus-wirth-80-und-aktiv
(Javscript neede to display the photos.)

N.