Colossal Typewriter by John McCarthy and Roland Silver was one of the earliest computer text editors. The program ran on the PDP-1 at Bolt, Beranek and Newman (BBN) by December 1960.About this time, both authors were associated with the Massachusetts Institute of Technology but it is unclear if the editor ran on the TX-0 on loan to MIT from Lincoln Laboratory or on the PDP-1 donated to MIT in 1961 by Digital Equipment Corporation.