Programming Calculator Texas Instruments
Original Texas Instruments 'TI Programmer'. It functions perfectly. All keys still fully readable. Performs Hexadecimal, Octal, Binary and Decimal arithmetic. Manufactured early 1970s. Original batteries (NiCad) still function - just! I would not attempt to charge them. They are standard "AA" cells. The batteries will be removed and disposed of before dispatching via any 3rd party.