DATAMATH CALCULATOR MUSEUM
Texas Instruments Speak & Spell (Type 4)
|Date of introduction:||1986||Display technology:||Fluorescent|
|New price:||Libraries: $17.95||Display size:||9 alphanumeric|
|Size:|| 10.0" x 7.0" x 1.3"
254 x 177 x 34 mm3
|Weight:||16.7 ounces, 474 grams||Serial No:|
|Batteries:||4*C cells||Date of manufacture:||wk 29 year 1989|
|AC-Adapter:||AC9199||Origin of manufacture:||USA|
|Precision:||Integrated circuits:||TMC0271, TMC0281/CD2801, CD2350A|
|Program steps:||Courtesy of:||Joerg Woerner|
|Download manual: (Word List 1981-1992)||
(US: 1.8M Bytes)
(US: 10.0M Bytes))
(US: 2.9M Bytes)
This Speak & Spell model from the year 1986 sports a slightly changed keyboard design please notice the small TI logo. We know four different designs:
|Version||Manufactured||Word List||Keyboard||TI Logo|
The same technology like this Speak & Spell was used in two other products: Speak & Read and Speak & Math. View the more serious Language products like the Language Tutor.
For the United Kingdom market Texas Instruments just changed the Speech-ROMs and created the Speak & Spell (British Voice), while Radio Shack sold an identical product as Spellmaster.
Later in 1989 the Super Speak & Spell was introduced with a multiline LC-display. Another two years later marketing decided to switch back to the original housing. View the wonderful Super Speak & Spell (91) and don't miss the wonderful "Professor" sold in China.
Don't miss the appearance of the Speak & Spell in the movie „E.T. - The Extra-Terrestrial“. Do you know Qubais Reed Ghazala? Get more tunes from your Speak & Spell with circuit-bending.
Dismantling this Speak & Spell manufactured in July 1989 by Texas Instruments in the United States reveals a design centered around three Integrated Circuits:
TMC0271: 4-bit microcontroller with 2k*9 Bits ROM and 9*64 Bits RAM
• TMC0281: TMS5100 VSP (Voice Synthesis Processor)
• TMC0350/CD2350A: TMS6100 VSM (Voice Synthesis Memory) with 128k Bits
The Speech-ROMs of the Speak & Spell vary depending on the production date. Starting in 1981 the Word List was significantly reduced, differences in the voice tunes of the 1991 models are not known:
• 1979: TMC0351 and TMC0352
• 1981: TMC0350/CD2350(A)
• 1990: TMC0350/CD62175
An inside view of some dismantled Speak & Spell products could be found here.
In 1986 we knew a total of 10 different plug-in modules for the Speak & Spell, a comprehensive overview including the wordlists could be found here.
If you have additions to the above article please email: email@example.com.
© Joerg Woerner, December 5, 2001. No reprints without written permission.