The Computer Education Center of the Japanese Education Ministry has shown nine types of prototype personal computers for possible use in Japanese schools: the machines were developed by 11 firms, including Matsushita, Hitachi and IBM Japan, while NEC was still working on its prototype but due to have handed it over by now: the Centre will make its selection shortly for use in schools next year, but all the prototypes use the B-Tron variant of the national operating system which supports multiple windows and multitasking, running on an 80286; NEC’s box also runs MS-DOS.