LED VFD and LCD pocket calculators

Texas Instruments TI-1680

This TI calculator has a green VFD display. Very special, because it has a playback modus. Unfortunately not working, probably because the rechargable battery is broken ( is custom made) . It lightens up, but no key reaction. This item  is in a good  optical condition. Made in 1978. Comes with a box, an 110V adapter, a cover and instructions.

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