Terry A. Davis

TempleOS (formerly J Operating System, SparrowOS and LoseThos) is a biblical-themed lightweight operating system created over the span of a decade by the American programmer Terry A. Davis. The software is a x86-64 bit, multi-tasking, multi-cored, public domain, open source, ring-0-only, single address space, non-networked, PC operating system for recreational programming. The operating system was designed to be the Third Temple according to Davis and uses an interface similar to a mixture of DOS and Turbo C. Davis describes the operating system as a modern x86-64 Commodore 64 with a variation of C (named HolyC) in place of BASIC. (source)

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  • Birth: 12/15/69, born Terrence Andrew Davis in West Allis, Wisconsin.
  • High School: Mission Viejo High School (Mission Viejo, CA), Agua Fria High School (Avondale, AZ) class of ‘88
  • College: Arizona State University
    • Bachelor of Science in Computer Systems Engineering, focus in Embedded Systems, GPA: 3.63, Magna Cum Laude, received 12/18/1992
    • Master of Science in Electrical Engineering, focus in Control Systems, GPA: 3.54, received 12/16/1994
  • Work History
    • 1990 - 1996: Ticketmaster (Software/Hardware/Mechanical Engineer), designed Ticketmaster’s operating system
    • 1996 - 1997: Home Automation & Robotic Equipment (Engineer), designed a 3D printing machine
    • 1997 - 1999: Xytec Corp (Engineer), designed FFPGA-based image processing equipment
    • 2000 - 2001: H.A.R.E. (Engineer), wrote SimSructure program
    • 2001 - 2002: Graphic Technologies (Engineer), made replacement chips for toner printer cartridges
    • 2003 - 2018: Trivial Solutions (self-operated), started TempleOS development in 2003
  • Death: 8/11/18, died in The Dalles, Oregon due to being struck by a union pacific trainFor a more detailed timeline, please view the Timeline of TempleOS wiki.


  • Father: Terry Edward
  • Mother: Marietta
  • Sisters: Therese, Brenda, Caryn
  • Brothers: Keith, Danny, Sean, Kevin
  • Cousins: Lani, Brigette

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