Computing

Computers are machines capable of performing any possible calculation you imagine.

It is important to take ownership of these machines, to learn how to control them fully, rather than to simply rely on others, or we are forced to accept the restrictions of the programs currently available.

Thanks to people making their software freely available, it is not necessary to be restricted to commercial offerings. Free software has also been incorporated into commercial packages (such as the core of Apples current system).

Full operating systems are available thanks to the free software movement, these include the source code and compilers necessary to make further modifications if needed. Many of these tools are also available on non-free non-open platforms such as Microfoft Windows and Apple OSX.

Operating systems

The operating system is the system that gets between you and the processor.

What is Unix?

Unix is a specification for a multitask, multiuser operating system with standardised interface. The motivation being to allow software to be used on machines made by different manufacturers.

If you are using unix for the first time I wrote a small introduction to using unix command line. Also introductions to Linux and free-open source software. Other people have provided an explaination of Mac OS X.

Software

You can find some programs I wrote and used in my PhD.

I also wrote a short tutorial for using gnuplot which is a flexible plotting software for producing all sorts of graphs from data or functions.

Programming

No information about this here :)

Miscellany

Sometimes I add useful sites to a list of computing links.