Geoffrey William Arnold Dummer, MBE (1945), C. Eng., IEE Premium Award, FIEEE, MIEE, USA Medal of Freedom with Bronze Palm (25 February 1909 – 9 September 2002) was an English electronics engineer and consultant, who is credited as being the first person to popularise the concepts that ultimately led to the development of the integrated circuit, commonly called the microchip, in the late 1940s and early 1950s. Dummer passed the first radar trainers and became a pioneer of reliability engineering at the Telecommunications Research Establishment in Malvern in the 1940s.