1984 MB My Dog Has Fleas

1984 Christmas advert from MB games for the game My Dog Has Fleas!

The Milton Bradley Company is an American game company established by Milton Bradley in Springfield, Massachusetts, in 1860. In 1920, it absorbed the game production of McLoughlin Brothers, formerly the largest game manufacturer in the United States and in 1987 it purchased Selchow and Righter, makers of Parcheesi and Scrabble.

Milton Bradley was taken over by Hasbro, Inc., in 1984. Now wholly owned by Hasbro, it is still retained as one of Hasbro’s brands, similar to the manner in which Parker Brothers is one of Hasbro’s brands. It is a board game and sometimes video game publisher. During the late 1980s and early 1990s, Milton Bradley marketed a series of games (such as HeroQuest) in North America that were developed in the United Kingdom by Games Workshop (GW) that drew heavily from GW’s Warhammer Fantasy universe, albeit without explicit reference to the Warhammer product line. Milton Bradley also developed numerous game consoles such as the Microvision and Vectrex.


1979 Big Trak from MB

1979 Big Trak from MB

MB Big Track advert from the 80’s

BIG TRAK / bigtrak was a programmable electric vehicle created by Milton Bradley in 1979.

It was a six-wheeled tank with a front-mounted blue photon beam headlamp, and a keypad on top. The toy could remember up to 16 commands which it then executed in sequence (such as “go forward 5 lengths”, “pause”, “turn 30degrees right”, “fire phaser” and so on. There was a “repeat” instruction allowing simple loops, but the language was not Turing complete, lacking branching instructions; the Big Trak also lacked any sort of sensor input other than the wheel sensors.


BigTrak Keypad (US)

BigTrak Keypad (US)

There is now a small but dedicated Internet community who have reverse engineered the BIG TRAK and the Texas Instruments TMS1000 microcontroller inside it (see external links).

The US and GB/European versions were noticeably different. The US version was moulded in gray plastic and labelled BIG TRAK whereas the GB version was white and labelled bigtrak with a different keypad.

Bigtrak also included an optional trailer accessory. Once hooked to Bigtrak, this trailer could be programmed to dump its payload.

Programmable keypad

All programming to BigTrak was done through the keypad shown here. There were no LED displays or ways to display program instructions, beyond actually running the program, which was done by pressing “GO”. Other function keys included:

  • Forward/Backward: Move forward and backward
  • Left/Right: Turn the specified number of degrees in that direction
  • HOLD: Pause for a number of seconds (GB version; P: Pause)
  • FIRE: Fire the LED “laser” (GB; Photon Symbol)
  • CLR: Clear the program (GB; CM: Clear Memory)
  • CLS: Clear Last Step (GB; CE; Clear last step)
  • RPT: Repeat a number of steps (primitive loop) (GB; x2: Repeat key)
  • TEST: Run short test program
  • CK: Check last instruction (GB; Tick symbol)
  • Out: Dump optional trailer accessory
  • In: Reserved for future expansion (GB; missing. Disabled or not implemented on most if not all BigTraks)

Info gleaned from Wikipedia