Navy Comparator

This article or the following section is not adequately provided with supporting documents ( e.g. individual evidence ). Information without sufficient evidence could be removed soon. Please help Wikipedia by researching the information and including good evidence.

The Navy Comparator was a decoding machine that Vannevar Bush had developed for the US Navy from 1937 under the direction of Waldron S. McDonald , after he had completed the Differential Analyzer .

The task of the Navy Comparator should be to determine the correspondence between two encrypted messages. These should be coded in the form of punched strips and compared with the help of photocells.

In 1938 the not fully functional device was handed over to the Navy, but was taken out of service after a short time due to technical problems and the lack of competence of the operating personnel. The successor project to Bush was the Rapid Selector .