At the Massachusetts Institute of Technology he also worked on the differential analyser, an early type of mechanical computer developed by Vannevar Bush for obtaining numerical solutions to ordinary differential equations . Shannon published Mathematical theory of the differential analyzer in 1941.
Sa Massachusetts Institute of Technology siya rin ay nagtrabaho analyser sa kaugalian, isang maagang uri ng makina computer na binuo ng Vannevar Bush para sa de-numerong pagkuha ng mga solusyon sa mga karaniwang kaugalian equation. Simbahan-publish na matematiko teorya ng kaugalian analyzer sa 1941.