Deep learning accelerators similar 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 College. Stibitz surprised the group by performing calculations remotely on the CNC (situated in New York Metropolis) using a Teletype terminal linked through to New York over special telephone strains. This is probably the primary instance of distant access computing.