Since 2007 I teach beginners how to write their first programs and help professionals how to get better at what they do. I've done this in classrooms and online via Zoom and Teams but when Covid hit, I was forced to turn my classroom courses into online courses.

I love standing in front of students...

There is something magical about Spectrum Analyzers on old stereo sets. Favorite CD in the tray, Lights out and enjoy the show!

But how does it work? What is the magic behind this great Eighties technology?

It took me 40 years from my first try on my Commodore64 until now but I finally got it done...

I moved from the Netherlands to Germany in 2013 and the transition was not that hard because the Dutch and Germans share a lot of culture and language.

But there are differences between our people! And one of them is very helpful for my everyday work as a trainer and software engineer.

"Ungenaue A...