Japan Ergonomic Keyboard History
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Thumb-Shift, 1980 -
NEC PC-8801-KI, 1983 -
NEC 文豪 Mini7, 1985 -
TRON, 1986 -
NEC M-system, 1990 -
NEC 文豪 Mini7RM, 1992 -
NEC PC-9801, 1992 -
NEC Ergofit, 1998 -
Scythe Ergo Diver, ~2003 -
μTRON, 2007 -
Esrille New