8 "It really is a gas engine": Ibid., p. 13.
9 "Alan had no friend": Ibid., p. 23.
Chapter Two.
1 "can be anything: a distance": Mollenhoff, p. 29.
2 "in essence a variable-speed gear": Hartree, quoted in Barnet, paragraph 12.
3 "The advantages of the method": Atanasoff and Brandt, abstract, p. 83.
4 "the properties of vacuum tubes": Welch, "a power supply and electric motor": Ibid.
6 "Don"t worry about people stealing your ideas": "Howard Hathaway Aiken," "when the family"s enormous vegetable garden": Burton, p. 86.
8 "I had been forced to the conclusion": Ibid., p. 89.
9 "represented an elegant and powerful symbolism": Hodges, p. 112.
10 "was not only a matter of abstract mathematics": Ibid., p. 107.
Chapter Three.
1 "I have traced my ancestry back": Zuse, p. 1.
2 "Given my many detours": Ibid., p. 21.
3 "on all sides now": Ibid., p. 30.
4 "The psychological effect": Ibid., p. 31.
5 "When I began to build": Ibid., p. 34.
6 "which took money": Ibid., p. 35.
7 "pasted the paper": Ibid., p. 36.
8 "It took up almost the entire living room": Ibid.
9 "I don"t want to discourage you": Ibid., p. 42.
10 "To construct large and expensive computing machines": Ibid., p. 43.
11 "I was in such a mental state": Mollenhoff, p. 157.
12 "When I finally came to earth": Burton, pp. 3435.
13 "For fifteen days I strove": Andreasen, p. 43.
14 "The changes of travel": Ibid., p. 44.
15 "most of the time that we speak": Ibid., p. 78.
16 "I would hypothesize": Ibid.
17 "I chose small condensers": Mollenhoff, p. 35.
Chapter Four.
1 "I ... was of the opinion": Zuse, p. 38.
2 "It is not true": Ibid., p. 55.
3 "We did not dare": Burton, p. 100.
4 "It could just add and subtract": Ibid., p. 102.
5 "The idea would be": Hodges, p. 141.
6 "should interfere as little as possible": Leavitt, p. 136.
7 "I was in Berlin": Flowers, "D-Day at Bletchley Park," pp. 8182.
8 "Thomas Harold Flowers": "Tommy Flowers-Technical Innovator," Five.
1 "was the right person": Hodges, p. 181.
2 "the geese who laid": Roberts, p. 348.
3 "by the end of 1939": Ibid., p. 37.
4 "What do you mean": Zuse, p. 58.
5 "performed flawlessly": Ibid., p. 61.
6 "It was a jaw-dropping accomplishment": Gustafson, personal communication, April 5, 2010.
7 "Available were unskilled": Zuse, p. 65.
8 "What should I be doing now?": McCartney, p. 30.
9 "used vacuum tube circuits": Ibid., p. 36.
10 "would send problems over": Gustafson, interview, February 22, 2010.
11 "masked the unnerving sound": McCartney, p. 41.
12 "If you"re going to come": Ibid., p. 42.
13 "Is there any objection": Burton, pp. 12627.
14 "Our attorney has emphasized": Ibid., p. 128.
15 "Notorious for his idiosyncrasies": Wansell,
genius-Alan-Turing-suicide-just-gay.html.
16 "Before the war": Hodges, pp. 21415.
17 "the operation of fifteen U-boats": Ibid., p. 222.
Chapter Six.
1 "his unusual imagination": Burton, p. 134.
2 "an electronic device": Ibid., p. 138.
3 "None of us had much confidence": McCartney, p. 51.
4 "size, destinations, and departure times": Roberts, p. 367.
5 "The Admiral at Halifax": Hodges, p. 261.
6 "they found their outlook": Ibid., p. 251.
7 "A machine could be designed": McCartney, p. 48.
8 "Eckert acquired some mice": Ibid., p. 76.
9 "He looked Atanasoff in the eye": Burton, p. 144.
10 "We had a tube fail": Randall,
_lost_interview_with_ENIAC_co_inventor_J._Presper_Eckert.
11 "Even as I was putting it together": Zuse, p. 71.