Texas Instruments Les Maths Magiques

Date of introduction:  1982 Display technology:   
New price:    Display size:  n.a
Size:  5.3" x 8.5" x 1.5"    
Weight:  9 ounces Serial No:  
Batteries:  9V Date of manufacture:  wk 46 year 1982
AC-Adapter:   Origin of manufacture:  Italy
Precision:   Integrated circuits:  CD2801A (TMC0281), CP3447, CD62173
Program steps:   Courtesy of:  Joerg Woerner

At first glance this rare Les Maths Magiques sold in France seems to be a variation of the Speak & Spell Compact and its sibbling Speak & Write

But the keyboards of these two products type the characters "A"..."Z" while the Les Maths Magiques reads the numbers "0"..."9" like the original Speak & Math introduced already in 1980.

If you compare the keyboard with the later Maths marvel and its sibblings le Calcul magique, Dotto Contaparla and Mathe-Fix you solve the mystery:

Product line Original product Compact edition
SPELL Speak & Spell Speak & Spell Compact
MATH Speak & Math Les Maths Magiques



Actually we discovered the the unknown "Speak & Math Compact" sandwiched between the original Speak & Math and the le Calcul magique introduced in 1986 and using much simpler technology.

LesMathsMagiques_1.jpg (99838 Byte)Dismantling the Les Maths Magiques reveals indeed the technology of the Speak & Math / Speak & Spell products.

LesMathsMagiques_PCB.jpg (91061 Byte)The printed circuit board (PCB) of the educational toy sports well-known components:

CP3447 - A customized TMS1000 single-chip microcomputer
CD2801A - The TMC0281 Voice Synthesis Processors
CD62173 - The TMC0350 Voice Synthesis Memory


If you have additions to the above article please email:

Joerg Woerner, July 12, 2005. No reprints without written permission.