Texas Instruments le Calcul magique

Date of introduction:   Display technology:  
New price:   Display size:  n.a.
Size:  4.3" x 6.9" x  1.25" 
 108 x 176 x 32 mm3
Weight:  7.7 ounces, 219 grams Serial No:  
Batteries:  4*AA cells Date of manufacture:  wk 22 year 1986
AC-Adapter:   Origin of manufacture:  Italy
Precision:   Integrated circuits:  TMS50C40A (CD54147)
Program steps:   Courtesy of:  Joerg Woerner

Nothing else than a Maths marvel trimmed to French language. Don't miss the Dotto Contaparla sold in Italy.

A slightly simpler model was sold in Germany with the Mathe-Fix.

The single-sided PCB is of the le Calcul magique is labeled "MINI-MATH", obviously a reference to the original Speak & Math introduced by Texas Instruments already in 1980 and not related to the Minimath calculator developed in 1971.

The compact design of the PCB is centered around just one Integrated Circuits

TMP50C40A/CD54147: TSP50C50 VSP (Voice Synthesis Processor) with 8-bit microcontroller and 8k Bytes Mask ROM for both program and voice and 32 Bytes RAM

The le Calcul magique is featured in the Texas Instruments France SA leaflet Magiques et Intelligents dated 1991.

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If you have additions to the above article please email:

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