Japan’s Centre for Educational Computing has decided to use the B-Tron variant of the multi-purpose Tron operating system for teaching in primary and high schools from 1989: NEC Corp, the only one of 12 companies to take a stance against B-Tron and instead recommend its version of MS-DOS, considered the decision a setback, but Matsushita Electric Industrial, Fujitsu and nine other firms backed the adoption of B-Tron for the proposed standard model, and Toshiba, Mitsubishi, Matsushita and three other manufacturers are now developing B-Tron prototype, while Hitachi, Fujitsu, IBM and Sony are developing their own versions; manufacturers have been asked for completed prototypes by January, and a decision on which to use is set for March.