Texas Instruments TI-2000

Date of introduction:  1974 Display technology:  LED-stick
New price:   Display size:  6
Size:  5.1" x 2.9" x 1.3"
 130 x 74 x 34 mm3
Weight:  5.1 ounces, 144 grams Serial No:  F04540
Batteries:  3*AA  Date of manufacture:  wk 25 year 1974
AC-Adapter:   Origin of manufacture:  Italy
Precision:   Integrated circuits:  TMS0135
Program steps:   Courtesy of:  Joerg Woerner
    Download manual:   (FR, GB: 1.0M Bytes)

Okay, you finally found the TI-2000 in the Exactra part of the Datamath Calculator Museum. The label on the backside of the TI-2000 indicates with the bold "Made in Italy" already that the TI-2000 was manufactured for the European market.

Let's compare it with the other Exactra models. First of all, the housing is known from the Exactra 21, the color from the Exactra 20 and the missing Fix/Float switch from the Exactra 19.

Dismantling the TI-2000 manufactured in June 1974 by Texas Instruments in Italy reveals a very clean and simple design centered around the TMS0135 single-chip calculator circuit and a tiny display driver. The remaining parts form a small power-converter to use the 3 AA-sized batteries instead a 9V battery block.

But what kind of calculator is behind the TI-2000? None of the Exactra line! The printed circuit board (PCB) of the calculator is identical to the Exactra 20 but the missing Fix/Float switch is "hardwired".

Did you notice the "bubble lens" to magnify the small LED display? One of the most sought part of any Exactra calculator - don't miss the Star Wars: Episode IV - A New Hope (1977) story and learn more about the Exactra Calculator LED Displays


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If you have additions to the above article please email:

Joerg Woerner, December 5, 2001. No reprints without written permission.