TI-150 ,Texas Instruments ,vintage ,1974, RARE , Electronic Calculator ,Works .

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TI-150 ,Texas Instruments ,vintage ,1974, RARE , Electronic Calculator ,Works .:
$173.55

See pictures for condition , considering it\'s age it looks like new and it works .

• This calculator works as it should, it has been tested with 4 AA batteries , but have not been tested with AC adapter ,

The AC adaptor is available from another seller ( vintagecalculatorsinc ) on for $70 .

Includes the original TI case .

Rare opportunity to own one of these Extremely RARE calculators .

Vintage , 1974, RARE , Texas Instrument, TI-150, Works . Only 4000 Made .

For more info See \" datamath.org \"

Date of introduction: December 1974 Display technology: Panaplex

Display size: 8

Size: 6.5\" x 3.2\" x 1.8\"

Weight: 10 ounces

Batteries: 4*AA NiCd

AC-Adapter: AC9150 (not included)

Origin of manufacture: USA

Precision: 8

Integrated circuits: TMS0852

By doing some searching on google , I found the following info:

Leading Engineer at Texas Instrument Wrote :

The TI-150 was the only handheld to use a plasma display. It has a character height of 0.2 inch and was intended as an \"Executive\" calculator. The case was the TI-2550\'s. It lacked the memory feature and was over priced. The production figure of 4,000 is probably right, although I wonder if they actually sold that many. It definitely was the wrong calculator at the wrong time. The plasma display requires about 150 volts to fire the segments. The TMS0855 is probably similar to the TMS0852 in having relatively high voltage display drive output architecture, but driving the plasma display required use of separate discrete high voltage PNP transistors, 2N5400 or 2N5401\'s as I recall without opening up my TI-150 to look.

Something else that most people may not know is that TI made its own plasma displays at a plant in Sherman. They were a direct replacement for the Borroughs Panaplex.