This is a book of photographs and text profiling 35 machines from the Computer History Museum in California. Highlighting some of the most important and eccentric machines in the museum's collection - the largest in the world - Core Memory is a photographic tour of some highlights and curious detours in the history of computing. The computers themselves are the story: artifacts from earlier stages of a culture that races forward at such speed that it risks forgetting its past. Included here are such historically important machines as the Eniac, Johnniac, Cray 1-3, Apple I and II, and many more.