Apollo Books

A new book called "Digital Apollo" by David Mindell looks at the Apollo Guidance Computer (AGC). Listings of the AGC code may be found @ (http://authors.library.caltech.edu/5456/1/hrst.mit.edu/hrs/apollo/public/archive/1701.pdf)

For more on that see Journey to the Moon: The History of the Apollo Guidance Computer by Eldon C. Hall. This book also provides a fascinating look at the human side of engineering, and how pilot demands (think "customer demands"), both reasonable and not, effect how we build systems.