Xavier Calbet's articles

Generating cool fractals

Whether you are a professional or amateur scientist, engineer or mathematician, if you need to make numerical calculations and plots quickly and easily, then PDL (Perl Data Language) is certainly one of the best free software tools to use. PDL has everything that similar high-level, proprietary, numerical calculation languages (like IDL or MATLAB) have. And it certainly comes with all the features you would expect to have in a numerical calculation package.

Writing device drivers in Linux: A brief tutorial

“Do you pine for the nice days of Minix-1.1, when men were men and wrote their own device drivers?” Linus Torvalds

Pre-requisites

In order to develop Linux device drivers, it is necessary to have an understanding of the following:

  • C programming. Some in-depth knowledge of C programming is needed, like pointer usage, bit manipulating functions, etc.
  • Microprocessor programming. It is necessary to know how microcomputers work internally: memory addressing, interrupts, etc. All of these concepts should be familiar to an assembler programmer.
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