Allen Razdow was born in New York City in 1946 to Austrian immigrant parents. He now lives with his family in western Massachusetts. An MIT graduate in Physics, he is best know for his invention of Mathcad technical calculation software and founding of Mathsoft Inc. with co-founder David Blohm. Mathcad is now a property of Parametric Technology Corporation. Currently, he and his company True Engineering Technology, LLC are developing new approaches to data and knowledge representation.