Bil Herd

Bil Herd

Bil Herd (right) and chip designer Dave DiOrio circa 1983.
Bil Herd (right) speaks to Jack Tramiel at the 25th Anniversary of the Commodore 64 at the Computer History Museum in 2007.
Bil Herd CBM Design Engineer at Commodore Christmas Party 1985

Bil Herd is a computer engineer who created several designs for 8-bit home computers while working for Commodore Business Machines in the early to mid-1980s. After first acting as the principal engineer on the Commodore Plus/4, C16/116, C264, and C364 machines, Herd designed the significantly more successful Commodore 128, a dual-CPU, triple-OS, compatible successor to the Commodore 64. Prior to the C128, Herd had done the initial architecture of the Commodore LCD computer, which was not released.

After leaving Commodore, Herd continued to design faster and more powerful computers with emphasis on machine vision and is a co-author on a patent involving n-dimensional pattern matching. Herd also designed an ultrasonic backup sensor for vehicles while working for Indian Valley Mfg. in 1986, a feature found on many modern vehicles today.

Herd has undertaken an entrepreneurial role and is owner of several small companies. As for recent low-level computer hacking, he did a "cameo appearance" by contributing a snippet of sprite logic code to the C64 DTV product designed by Jeri Ellsworth.

Military and community service

Military service:

Voluntary health care work:

  • 1989–1996: Fellowship First Aid Squad / Mount Laurel EMS Inc. Highest rank: Captain (also served as President)
  • 1991–1995: Cooper Trauma Center - Camden, NJ: Trauma Technician


  • Bagnall, Brian: On The Edge: The Spectacular Rise and Fall of Commodore, ISBN 0-9738649-0-7.
  • Greenley, Larry, et al. (1986). Commodore 128 Programmer's Reference Guide. ISBN 0-553-34378-5. (Herd Co-author)

External links

  • CNET TV coverage of Commodore64 25th anniversary with rare interview of Jack Tramiel. Includes Bil Herd, Steve Wozniak.
  • Commodore 128 History at – by Ian Matthews
  • C128D information, with quotes by Herd – By M. A. Grundke (aka Sothius)
  • A brief history of the computer demo scene – By Tamás Polgár
  • The C128 story, by Bil Herd – at Fab's Commodore page (Fabian Meyer)
  • Commodore Users Group Video - Updated 2005 – With Bil Herd, Dave Haynie
  • Appearance on The Linux Link Tech Show on September 12, 2007 (ogg) (mp3)
  • Two videos of Bil Herd at the 25th Anniversary of the Commodore 64 at the Computer History Museum in 2007
  • A video of Bil Herd and Dale Luck post-show at the 25th Anniversary of the Commodore 64 at the Computer History Museum in 2007
  • video of Bil Herd describing the C116 TED family of computers under Jack Tramiel
  • Video of Bil Herd and Jeri Ellsworth explaining Phase Locked Loops