DATAMATH CALCULATOR MUSEUM
|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|
|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.|
|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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© Joerg Woerner, December 5, 2001. No reprints without written permission.