books.google.ca - As Apollo 11's Lunar Module descended toward the moon under automatic control, a program alarm in the guidance computer's software nearly caused a mission abort. Neil Armstrong responded by switching off the automatic mode and taking direct control. He stopped monitoring the computer and began flying...https://books.google.ca/books/about/Digital_Apollo.html?id=gXYItzQARVoC&utm_source=gb-gplus-shareDigital Apollo
