I haven't read this yet - I just ordered it, but the descriptions and reviews make it sound like an interesting read for computer engineers. Most technical aspects of the space program would require a lot of study for me to really understand - I'm not an aerospace or mechanical engineer. But I can design computers - so it might be interesting to learn about computers in spacecraft. Embedded systems design is my favorite kind of computer engineering because its about making the best out of limited resources, a real technical challenge. I imagine the computers in modern space craft like Dawn are far more sophisticated, but this might be a fun introduction to the subject.

The Apollo Guidance Computer: Architecture and Operation is the first comprehensive description of the Apollo computer, beginning with its internal organization to its user interface and flight software. Particular emphasis is placed on the instruction set, Executive capabilities, the Interpreter and the detailed procedures for mission application software. Launch, landing on the Moon and entry back on Earth are explained in rich detail and show how the computer was an integral part of the spacecraft operation. As a comprehensive account, it spans the disciplines of computer science, aerospace engineering and spacecraft operations.