Designed and constructed a special purpose digital physiological monitoring
system from the ground up (circa 1976), comprising 144 TTL ICs and 10 CMOS ICs,
in 3 physical units. My work spanned circuit design, circuit board layout and
etching, case layout and construction, component mounting, soldering, and
wiring, and testing. The final documentation contained complete circuit diagrams
and theory of operation. more info
1975-1976
Designed and constructed a high resolution image digitizer for diagnostic
X-ray films, from the ground up, comprising 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
Co-designed and co-constructed a high resolution digital film writer, from
the ground up, comprising a high resolution CRT display, optics, and computer
interface software. 1981-1983
Immersed in networking hardware and software for 7 years at the Univ. of
Utah, Campus Networking Dept. This 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, or using the correct 10BaseT plug for twisted versus solid wire,
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, among
others. 1988-1995
My roots are in hardware, both analog and digital. Through experience
ranging from my childhood 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.