DATAMATH CALCULATOR MUSEUM
Texas Instruments Language Tutor
|Date of introduction:||January 1980||Display technology:||Fluorescent|
|New price:||$150||Display size:||10 alphanumeric|
|Size:|| 8.0" x 3.4" x 1.25"
202 x 87 x 32 mm3
|Weight:||10.1 ounces, 286 grams||Serial No:||1542|
|Batteries:||4*AA cells||Date of manufacture:||wk 47 year 1979|
|AC-Adapter:||AC9199||Origin of manufacture:||USA (MTA)|
|Precision:||Integrated circuits:||TMC0275, TMC0280 + Module: 4*TMC0350|
|Program steps:||Courtesy of:||Joerg Woerner|
(FRENCH US: 6.2 MByte)
(GERMAN US: 14.5 MByte)
(SPANISH US: 13.7 MByte)
after the invention of the synthesizer technology to reproduce human speech with
tuned voices stored in ROMs (Read Only Memories - Integrated Circuits), the
Language Translator was
introduced. The product was later renamed to Language
Tutor and both products were marketed in parallel. With the Language Teacher a
cheaper version without the speaker was introduced the same time.
Dismantling this Language Tutor manufactured in November 1979 by Texas instruments in its Midland, TX facility reveals a design centered around a TMC0280 Voice Synthesis Processors (VSP) - also known as TMS5110 - and a TMS0275 single-chip microcontroller.
We assume that the microcontroller is a member of the TMS1270 family, optimized for vacuum fluorescent displays (VFD).
An easy accessible "Solid State Speech™ Module" contains the software to translate from e.g. English, French and Spanish to spoken German. Other modules to translate to spoken English, French or Spanish were available. Texas Instruments announced optional modules in Russian, Chinese and Japanese for $50, each. We don't know if these modules were actually introduced. These Speech Modules contain a total of four TMC0350 Read Only Memories (ROMs) - also known as Voice Synthesis Memories TMS6100 - with 128 kBits, each.
From a technical point of view the Language Tutor and Translator are very similar to the Speak & Spell, nevertheless was its suggested retail price about 3 to 5 times higher.
A typical Solid State Speech Module, for example the French Word/Phrase module, stores 360 individual words and 78 phrases that are spoken and displayed and additional 239 individual words that are only displayed. The phrases are available with the input of a two-digit number, e.g. "19" means "What is this?".
To create complete sentences you could link phrases together: "7" + "209" + "433" will give you the French translation of "I would like" "a" "room".
The individual words are entered letter by letter and translated to the target language. Six possibilities were available, but each module could "speak" only one language:
If you have additions to the above article please email: firstname.lastname@example.org.
© Joerg Woerner, December 5, 2001. No reprints without written permission.