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Title: This book has an essential flaw
Review: Any history of modern computing that starts with ENIAC is flawed. The first working, fully programmable general purpose computer was Konrad Zuse's Z3 (Germany, 1941). ENIAC (inspired by Atanasoff's earlier, less general designs) was fully programmable too, but came much later (in 1946). Z3's switches were based on relays instead of tubes like in ENIAC. This is no fundamental difference. There are many ways of implementing a switch. Today we use transistors, of course.
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