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Design and Implementation
Applied Technology for
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and Business

Digital and Analog Hardware Design and Implementation

Digital and Analog Hardware Design.

My roots are in electronics, both analog and digital. Through experience ranging from childhood tinkering to undergraduate study in Physics (with a focus on electronics), to work at NYU Medical Center, to graduate study in Computer Science, to work in Campus Networking at the Univ. of Utah, I became proficient in design, implementation, troubleshooting and repair.

In 1976, I designed and constructed a special purpose digital monitoring system from the ground up (above center), comprising e.g., 144 TTL ICs, 10 CMOS ICs, and dozens of relays. This work spanned initial logic and circuit design, circuit board layouts and etching, physical case layouts and construction, component mounting and soldering with extensive color coded wiring, and testing. Documentation contained complete circuit diagrams and comprehensive theory of operation. More Info & Slideshow
  1975-1976 Indiana University of PA, Psychology Dept

Worked extensively with the electronics and hardware of the first CT scanners and other imaging systems at NYU Medical Center, Radiology as their first digital imaging specialist. Responsibilities included maintenance and quality control of the CT scanners for which I attended the vendor's field service engineer classes, after which I could often fix scanner problems (electronic and mechanical) or expedite field service to minimize costly downtime. I also investigated video monitor image quality issues as pertained to the first digital film writers, e.g., black level clamping, gamma correction, point spread function. 1977-1980

Designed and constructed a high resolution image digitizer for diagnostic X-ray films from scratch. This comprised a camera with high resolution photo array, high intensity light source with mirror and Fresnel lens, high resolution memory buffer, and computer interface software. More Info
  1981-1983 Univ. of Utah Medical Center, Diagnostic Imaging Lab

Co-designed and co-constructed a high resolution digital film writer from scratch, comprising a high resolution CRT display, optics, analog/digital interface hardware, and computer interface software.
  1981-1983 Univ. of Utah Medical Center, Diagnostic Imaging Lab

Immersed in data networking hardware, software and design for 7 years at Univ. of Utah, Campus Networking. Played a key role in the first university-wide data network in the late 1980s, initially built on a legacy broadband video system and later replaced with FDDI via air blown optical fiber. My work included design, installation, testing, troubleshooting, and repair, from low level issues such as investigating broadband problems with a spectrum analyzer, or Ethernet problems with an oscilloscope, up through extensive use of protocol analyzers and SNMP monitoring and analysis tools. Physical layers included FDDI and other fiber optics, DS1/DS3, and all forms of Ethernet from the original "yellow hose" through 10BaseT, linked through repeaters, bridges, switches, and routers (primarily cisco). Protocols included TCP/IP, AppleTalk, Novell IPX, and DECNet. 1988-1995

To learn more, see selections under Hardware Design at left.

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