Where Technology Provides People with Disabilities Access to Information
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Meet the Team

Photograph of gh employees

Dave A. Schleppenbach


Dave is responsible for gh's strategic direction and business development. He began his career by founding and directing the VISIONS Lab at Purdue University in 1995, where he developed hardware and software solutions for visually impaired students. In 2000 he co-founded gh, LLC and served as Chief Executive Officer.

Dave brings to gh 8 years of experience in assistive technology, including his strong reputation in both academic research, and administering federally funded programs. Dave has worked with hundreds of blind students to develop gh's LaserLineā„¢ graphic standards and also specialized curricula for science and math. He has taught Purdue University courses in the areas of Chemistry and Special Education. Dave's academic degrees include physical chemistry, mathematics, and special education.

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Dennis Leas

Director, Technology

Dennis Leas joined gh in October 2003. He leads the software development team and the Technology Department. Dennis is responsible for managing the gh PLAYER, ATS, and MathSpeak projects, as well as supporting production by building tools for creation of the Digital Talking Books and assistance to Media Conversion projects. He brings to the company over 30 years of experience in programming, consulting, and training.

Dennis received his Bachelor of Science degree in Electrical Engineering from Purdue University in 1982. He obtained special training in Object-Oriented Programming in C++ for Programmers from Purdue University in 2002. His expertise is in C++/MFC, signal processing, and network programming. Dennis instructed Novell Administration I and C/C++ Programming courses at Ivy Tech State College in 2003.

Dennis published "Chisel Your Code with a Profiler" in Byte Magazine, August 1983, Vol.8, p.286. In 1978 Dennis and J.E. Mittenthal published "A Probabilistic Model for the Granular Layer of Frog Cerebellar Cortex" in Neuroscience, Vol.3, p. 181-198.

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