About me

My name is Rudy Velthuis. I was born in 1960, in Eindhoven, the Netherlands, and studied Dentistry in the Radboud University in Nijmegen, finishing with my Master’s degree in 1985. That same year, I moved to Germany, and I have lived here ever since. For my living, I work as a dentist. Since 1987, I have my own clinic in Gladbeck, Germany — since the end of 2006 even a new, bigger one. I am married, and we have one son.

I am an enthusiastic hobby programmer, and for this, I prefer Delphi . I have been using Borland, CodeGear and Embarcaro products since 1985, mostly Turbo/Borland Pascal and Delphi, but also C++Builder, Kylix and C#Builder.

I have done some simple things in other programming languages as well, most of them in BBC-BASIC, BCPL, FORTH (before 1985), Assembler (6502, Z80, x86, x86-64), C, C++, C#, Objective-C, Java, Common Lisp, JavaScript, Ruby and Python. My first “big” project was writing a complete disk filing system for my Acorn BBC B home computer, completely in BBC-BASIC’s built-in 6502 assembler (16k ROM).

My other computer interests are simple computer graphics, like many of the graphics on this site, using Open Source programs like Inkscape, The Gimp, and sometimes the POV-Ray raytracer.

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