off-the-shelf battery powered digital hour meter to be turned on and off
http://www.imagineeringezine.com/PDF-FILES/hourmtr.pdf
powering mobile phones from fewer cells focuses attention on every aspect of battery discharge
http://www.edn.com/archives/1997/041097/08df_04.htm
[free] Using MATLAB and a browser together as clients for graphical applications.
http://puddle.mit.edu/~glenn/mocha.html
Powerful optical design library, and showing features, slide show, download, and register areas.
http://members.kabsi.at/i.krastev/modas.html
http://www.mrs.bt.co.uk/dubus/9102-3.pdf
to add IR remote capability.
http://web2.airmail.net/will/str0g3.html