Jack W. Crenshaw wrote his first computer program in 1956 for an IBM 650 computer. Since then he's earned his PhD in physics from Auburn University and worked at NASA on the Moon missions. He is also the author of Math Toolkit for Real-Time Programming (2000), where you can learn more about his career and the techniques he describes in his columns. Crenshaw enjoys contact and can be reached via e-mail at jcrens@earthlink.net.
