Although Dave has been providing technical and engineering services since 1972, the EDS name became established when Dave designed the original SemiAnalyzer 59A in 1985, which he designed originally for himself to increase his output as a subcontract service technician. After other technicians saw the amount of help the SemiAnalyzer 59B was providing and asking Dave to custom build them their own units, EDS was transformed into a viable business and incorporated a year later. Used by the military, fortune 500 companies, individual service technicians, and many technical trade schools and colleges, the now-famous SemiAnalyzer 59C was just the first in a series of unique test solutions to aid various technical specialties.

Following the EDS-59CSemiAnalyzer was the EDS-68 Bus Line Tracer, which located shorted and leaky components to their exact location on the PC board, the EDS-69 Teletester series, which simulated two telephone lines for repairing answering machines and faxes, and the EDS-76 MicroAnalyzer, which was designed to help microwave oven technicians check all parts in-circuit under high-voltage load.

At the St. Louis NESDA convention in 1996, EDS introduced the EDS-82A LeakSeeker , a digital, automatic version of the Bus Line Tracer, with many more capabilities. During 1997, EDS introduced the world's best and fastest in-circuit electrolytic capacitor checker, the EDS-88 CapAnalyzer .

Besides test equipment, throughout the years EDS has made many devices for internal marketing, as well as for other companies, on an OEM basis. Past products are the EDS-83 home/business Voice-Alert security system, the EDS-80 ProCar Auto Anti-theft owner-recognizing anti-carjack security system with voice-alert, the EDS-71 A/C Sentry air conditioning compressor monitoring efficiency-improving system, the EDS-63 "Christmas Computer" (Dave invented this computer-driven sequential individual-program motion controller designed for a Christmas light show back in 1983), and the pool-alert (to detect motion or overfill). Other past products are the EMS-911 which is the first successful integration of the home/business security system and the commercial environmental monitoring system as a wireless or CSMA/CD network and the EDS-81 LinEx and S.T.U. line-expanding telecommunications systems.