We also provide a list of miscellaneous resources based on some of the topics touched upon in this book, and other areas of interest:
Popular mechanics back issues at Google books: http://books.google.com/books?id=49gDAAAAMBAJ&source=gbs_all_issues_r&cad=1&atm_aiy=1960#all_issues_anchor
Wikipedia article on mains electricity: http://en.wikipedia.org/wiki/Mains_electricityWikipedia article on relays: http://en.wikipedia.org/wiki/Relay
Wikibooks embedded systems: http://en.wikibooks.org/wiki/Embedded_Systems
Open Source Initiative: http://opensource.org/
IO programming language: http://iolanguage.org/
IO programming language Raspberry Pi binary: http://iobin.suspended-chord.info/linux/iobin-linux-armhf-deb-current.zip