DATAMATH CALCULATOR MUSEUM
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DATAMATH CALCULATOR MUSEUM |
Longines Symphonette Electronic Calculator (B Series)
| Date of introduction: | 1972 | Display technology: | LED-modules |
| New price: | Display size: | 8 | |
| Size: | 5.9" x 3.5" x 1.5" | ||
| Weight: | 10 ounces | Serial No: | B 5033 |
| Batteries: | 4*NiCd AA | Date of manufacture: | mth 12 year 1972 |
| AC-Adapter: | unknown | Origin of manufacture: | USA |
| Precision: | Integrated circuits: | TMS0103 | |
| Memories: | |||
| Program steps: | Courtesy of: | Joerg Woerner |
Just
a minor design variation of the original Longines Symphonette
Electronic Calculator. Please focus on the color of the numeric keyboard
caps.
Dismantling
the featured Longines Symphonette Electronic Calculator manufactured in December
1972 reveals a typical design based on the TMS0103
single chip calculator circuit used in the famous Bowmar 901B.
We locate the display drivers SN75491 and SN75492and even the display modules
look familiar.
Klixon™ is a trademark of Texas Instruments.
If you have additions to the above article please email: joerg@datamath.org.
© Joerg Woerner, October 5, 2011. No reprints without written permission.