The TRS 80 model 100 was sold through the Tandy chain of stores in Australia. Designed by the Kyocera Corporation of Japan, the original incarnation, the Kyotronic 85, released only in Japan, was a slow seller. The rights were sold to Tandy, who remarketed it as the TRS 80 100, and the unit went on to be a very popular model - it being an affordable, highly portable computer.
The computer was given the branding TRS 80 100 due to the success of previous models of personal computers sold by Tandy. The TRS 80s, first sold in 1977, were affordable desk-top computers, and contemporaries of the Commodore PET and the Apple II. Superseding models of the TRS 80 - the Model II, III, 4, Model 16, and 16B did not exhibit innovation in computer architecture, or interface standards. The TRS 80 100, however, entered the TRS 80 brand onto the emerging popularity of the portable computer.
This particular object was used by the donor to compile research data for his Masters of history degree. It is also thought to be the first portable computer to have been taken into the State Library of New South Wales in Sydney to conduct research.