=:The VT100 keyboard mechanism was used on all sorts of machines (or =: =:VT100 =:Some HP terminals =:TRS-80 Model 1 (older version keyboard) =:Zenith/Heathkit Z19/H88/H89/Z90 =:TI 99/4a (I think) Yes on the TI99/4a Also kaypro, some not all I have two different keyboards. NS* advantage Haziltine 1500 and 1400 series. and like you said a who raft of others. Allison