DATAMATH CALCULATOR MUSEUM
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DATAMATH CALCULATOR MUSEUM |
RFT MR411
| Date of introduction: | Display technology: | LCD (yellow) | |
| New price: | Display size: | 8 | |
| Size: | 5.3" x 2.6" x 0.4" | ||
| Weight: | 3.2 ounces | Serial No: | 263785 |
| Batteries: | 2*LR44 | Date of manufacture: | |
| AC-Adapter: | Origin of manufacture: | GDR | |
| Precision: | 8 | Integrated circuits: | T3566 |
| Memories: | 1 | ||
| Program steps: | Courtesy of: | Joerg Woerner |
You
are familiar with this MR411 produced by the former GDR based company RFT ? You
are right, this is a perfect copy of the early Texas Instruments Datachron aka TI-1790
or the Toshiba LC-833WA. Read more about their
calculator exports here.
| Compare the perfection of the copy of the internals with the attached pictures. You'll find the MR411 always on the left side of the pictures. |
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| The MR411 uses the original Toshiba T3566 calculator chip found in the TI-1790 design |  |
| Later even this chip was a target of the eastern "copy cats" and the MR413 appeared. |
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If you have additions to the above article please email: joerg@datamath.org.
© Joerg Woerner, December 5, 2001. No reprints without written permission.
