Model V


The Model V was among the early electromechanical general purpose computers, designed by George Stibitz and built by Bell Telephone Laboratories, operational in 1946.
Only two machines were built: first one was installed at National Advisory Committee for Aeronautics, second at Ballistic Research Laboratory.

Construction

Design was started in 1944. The tape-controlled machine had two processors that could operate independently, an early form of multiprocessing.
Weighed about.

Significance

Built and used internally by Bell Telephone Laboratories, operational in 1949.
Simplified version of the Model V but with several improvements, including one of the earliest use of the microcode.