This article summarizes the salient features of seven relay‐type computers designed and built at Bell Telephone Laboratories. Emphasized are features derived from telephone technology and the role played by the Bell Laboratories designs in advancing the computer art.

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are with the Bell Telephone Laboratories, New York Ν. Y. Modern digital computers are capable of great flexibility.T h e y can be applied to a wide range of problems from the simplest to the most abstruse. This is a description of some of the problems solved successfully b y the Bell Labo ratories Model V computer.

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