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TheoryPDA was a line of personal digital assistants designed and marketed by Theorysonic. Their main operating system is PTSUG, and the first generation model was released in 1991.

History and availability

Development of what was to become the TheoryPDA began in 1987. It was first sold in 1991, starting in El Kadsre. The first generation model shipped with 35-pin charging connector, it was replaced by MetroCon with fourth generation model.

Decline

Sales of TheoryPDA begin to decline in 1997, after the success of TheoryPhone.

Production





Hardware





Software

The TheoryPDA runs Portosic OS from 1997 onwards, previously used TS-UGOS for TheoryPDA from 1991 to 1997.

Applications





Reception

The TheoryPDA has received positive reviews.

Gallery

See also

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