Called first augmented computer system,
this was the first PDA and Wearable Computer. It had a built-in LCD
display and an optional heads-up display that mounted on a headband
so you could have hands free operation, while wearing the unit on a
belt clip. The display was made by a company called Reflection Technology
and consisted of a vibrating mirror that scanned a led into your eye
to let you see the computer display. It worked amazingly well. The operating
system was developed by Colby and predated the Palm OS by 5 or 6 years.