The Signals and Power Subcommittee created the circuits that made the trains run, popularizing terms such as “foo”, “cruft”, and “hack” (an elaborate prank by an MIT student)
They eventually move from telephone relays to computers and programming (e.g., the IBM 704 and the TX-0)
By 1962 the layout was already a marvel of complexity the control system featured about 1,200 relays
Famous members included John McCarthy (AI, Lisp, 1971 Turning Award), Alan Kotok (DEC), and Jack Dennis (time sharing)