Mark Baker has been a test engineer for such companies as Spectra-Physics, Zilog, Pragmatic Test Systems, Schlumberger, Teradyne, and EPRO. In 1997, he founded his own company, TechniCom, which was devoted to technical training courses and seminars; one of their courses was on mixed-signal testing. In the fall of 2001, TechniCom was acquired by Texas Instruments and Baker is now a technical training manager for TI. Baker has published numerous in-house application articles for the ATE companies Teradyne and Schlumberger as well as articles in Electronics Test and Evaluation Engineering magazines.