Great book for enthusiasts of the Apollo project particularly the development of the Lunar Lander software. The Author explains how the software and systems work with a background the late 1960s culture, of frequent meetings with the Apollo astronauts and other well known characters, details of the development team, his love life and analysis of the software related problems, their fixes and near disasters.

It really brings to life the work of computer programmer, whose first program was the lunar lander software. Just the right level of geekiness and detail and still fun to read.