Diary: Mechanical Brain: For about a year now … computing machine. Production of computing plans according to … April 37. Discovery of conditional chains. … The idea came to me while designing the … [binary] system. … Decisive Idea: 6/19/37 Discovery that there are elementary … mechanical brain consists of a storage unit, a … The operations follow a plan similar to a … plan can still result from the preceding operations … "germ cell") … 6/20/1937: The elementary operation is: Comparison of two … cell of the mechanical brain Conditional chains are … the operation can be interrupted as soon as … [A former mathematics teacher of Zuse told him that conditional chains were the same as propositional calculus.]
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