Deep learning accelerators comparable to GPUs, FPGAs, and more lately TPUs. In 1939, Bell Phone Laboratories completes this calculator, designed by scientist George Stibitz. In 1940, Stibitz demonstrated the CNC at an American Mathematical Society convention held at Dartmouth Faculty. Stibitz shocked the group by performing calculations remotely on the CNC (located in New York City) using a Teletype terminal related via to New York over particular phone traces. This is seemingly the first instance of remote entry computing.