Pitchfork Solutions, LLC.
850 Francis Scott Key Hwy.
Keymar, MD 21757
(410)775-1325
Professional Objective:
To remain active in utilizing current technology to provide effective solutions
to everyday problems enabling increased efficiency and greater satisfaction.
Education:
1968 - BS, Physics, Elizabethtown College, Elizabethtown, PA
1970 - MS, Physics, Drexel University, Philadelphia, PA
Research: Remote determination of wind through the use of backscatter.
1998 - MS, Computer Science, Hood College, Frederick, MD
Research: Use of HP/GL as input for process control
Design Architectures
PDP-11 UNIBUS, LSI-11 Q-BUS, Multibus I
8080, 8085, Z80, 64180, 8051, 80188, 68EN360
RS-232, RS-422, RS-485, Ethernet
DMA Master, Interrupt
Operating Systems
Many proprietary, DOS, QNX, Windows, Linux including
mCLinux
Languages
Assembler for PDP-8, PDP-10, PDP-11, IBM-360, 8080/5, 8051, Z80, 64180, Bit slice
Fortran, BASIC, FOCAL, PL/M, Pascal, C, C++, Java, Perl, Javascript, Tcl/Tk
Work experience:
1998 - 2002 Staff Engineer, Patapsco Designs, Inc., Frederick, MD
Primarily responsible for hardware and software design for systems ranging from
microprocessor based embedded controllers using proprietary OS as well as
mCLinux to process control systems based on DOS
and Linux. Embedded hardware design was based on Intel 80188, Motorola 68EN306
and the Coldfire 5272 processors. Several applications were built on standard PC
technology utilizing Pentium class processors. The majority of software design was
in C/C++ with some in additional languages such as Perl, Javascript, or Tcl/Tk as
appropriate for the application. Although not specifically a language, HTML was also
used to define a user interface. Many designs involved interfacing to databases such
as Microsoft Access or PostgreSQL. Networking using IP was an integral part of these
efforts. Both TCP/IP and UDP/IP code was written for both Client and Server
applications.
1992 - 1998 Network Manager, Patapsco Designs, Inc., Frederick, MD
This position was initially to temporarily fill a need for computing resources at
Patapsco. It expanded into a full departmental function with the implementation of
the MANFACT II MRP system and full-time staff.
1991-1992 Physics Instructor, Frederick Community College, Frederick, MD
This was a part-time position teaching remedial Physics as a preparatory or
refresher course for students going into the standard Physics curriculum.
1984 - 1992 Design Engineer, Patapsco Designs, Inc., Frederick, MD
Responsible for both hardware and software designs for embedded systems. The majority
of the design effort was for the Zilog Z80 and Intel 8051 (or derivative) processors
with the software being written in Assembly language. Other architectures such as
bit-slice designs were used as appropriate. Most design involved serial protocols
(RS-232, RS-485, etc.) as well as process control and data collection. A few projects
at the end of this time frame were coded in C.
July 1982 Engineering VP, Digital Systems, Walkersville, MD
This was an attempt to move into new areas. For various reasons, it didn’t work out.
1976-1984 Design Engineer, Frederick Electronics Corporation, Frederick MD
Initially, this was a position within the ELTEX design team and involved work in
both hardware and software aspects of the system. Later, principle engineer for
the ELTEX IV system which was a TDM based switch handling both data and voice.
At the end of this time period, staff engineer involved in research on both packet
switching and high speed circuit switched data.
1974 - 1976 Instructor, Frederick Electronics Corporation, Frederick, MD
The primary responsibility was to establish a customer training program to enable
the customers to maintain their ELTEX telecommunications switches. This training
provided the customers with information, background and experience to allow maintenance
of both the hardware and software aspects of their systems. An important aspect of this
position was the necessity to produce customer oriented documentation.
1970 - 1974 Physics Instructor, Elizabethtown College, Elizabethtown, PA
Responsibilities included instruction of all levels of the undergraduate physics
curricula. This encompassed teaching both majors and non-majors. Also responsible
for directing the laboratory efforts including procedure writing and lab evaluations.
Publications:
"Analog Simulation of the Bouncing Ball Problem", American Journal of Physics, 1969
"The ELTEX II Telecommunications Exchange", ISSC '76, Kyoto, Japan
"Integrated Services Switching", Telecommunications, September 1979
"The Use of Linux in an Embedded System", on-line publication of Linux Journal
to be found at:
http://www2.linuxjournal.com/lj-issues/issue68/3555.html , December, 1999.
Professional membership:
SPS
Sigma Pi Sigma (Physics Honor Society) Inducted 1967
American Association of Physics Teachers 1967 - 1974
American Institute of Physics 1967 - 1974
IEEE since 1977
USENIX since 1998
National Capital Area Council Consultant’s
Network since 2002
Member number:7778
Additional Contact information is available on the Information Page.
Software Contractors' Guild (www.scguild.com)
Copyright(c) 1995 - 2001 David Pfaltzgraff and Software Contractors' Guild,
Post Office Box 257,Nottingham, NH USA 03290-0257