DATAMATH CALCULATOR MUSEUM
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DATAMATH CALCULATOR MUSEUM |
Texas Instruments Concept III
| Date of introduction: | 1976 | Display technology: | LED-stick |
| New price: | Display size: | 8 + 2 | |
| Size: | 5.8" x 3.2" x 1.3" | ||
| Weight: | 8 ounces | Serial No: | 0017847 |
| Batteries: | 3*AA | Date of manufacture: | wk 08 year 1976 |
| AC-Adapter: | unknown | Origin of manufacture: | USA |
| Precision: | 8 | Integrated circuits: | TMS1016 |
| Memories: | 1 | ||
| Program steps: | Courtesy of: | Joerg Woerner | |
| Download manual: | 
(US: 4.302 kB) |
Following
the path of the Slide Rule (SR) calculators like the wonderful SR-16
the Concept III was called Advanced Slide Rule.
If
you explore the calculator deeper (using the pictures on the right donated by Kirk B. Muri)
you'll immediately catch the similarities to the
SR-16 II. The only differences are the colouring
schema of the faceplate and the size of the letters. The slightly oversized
keyboard printing was continued later with the TI-1255.
Even
the inside view and a deeper look on the backside of the calculator gives us no
additional differences to a common SR-16 II. The printed circuit board (PCB) is
identical to a SR-16 II.
The backside gives one surprise: A serial number with
three leading zeroes! Let us assume that production numbers kept well beyond
the marketing expections.
Currently we know only three Concept III calculators:
|
CONCEPT III |
|||
| Serial Number |
Date Code |
Owner | Remarks |
| 0017847 | LTA 0876 | Joerg Woerner | |
| 0005066 | LTA xx76 | Kirk B. Muri | |
| 0002554 | LTA 1076 | ||
The Concept line covered three different models: The Concept I based on the TI-1200, the Concept II based on the TI-1250 and this Concept III as a sibbling of the SR-16 II.
If you have additions to the above article please email: joerg@datamath.org.
© Joerg Woerner, December 5, 2001. No reprints without written permission.