DATAMATH CALCULATOR MUSEUM
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DATAMATH CALCULATOR MUSEUM |
Texas Instruments Touch & Tell (United Kingdom)
| Date of introduction: | 1982 | Display technology: | n.a. |
| New price: | Display size: | ||
| Size: | 10.0" x 14.3" x 1.6" 254 x 362 x 41 mm3 |
||
| Weight: | 36.5 ounces, 1034 grams | Serial No: | |
| Batteries: | 2*D cells | Date of manufacture: | wk 18 year 1987 |
| AC-Adapter: | Origin of manufacture: | Italy | |
| Precision: | Integrated circuits: | CD8012, CD2802, CD62170 | |
| Memories: | |||
| Program steps: | Courtesy of: | Joerg Woerner |
Nothing
else than a Touch & Tell with British voices
stored in
the Speech-ROM.
Dismantling
this Touch & Tell manufactured in May 1987 by Texas Instruments in their
Rieti, Italy facility for the UK market reveals a small surprise: It includes indeed a
different Speech-ROM on the main printed
circuit board (PCB) compared with the original Touch & Tell.
The
design is centered around
three Integrated Circuits:
• CD8012: 4-bit
TMS1100 microcontroller with 2k Bytes ROM and 128*4 Bits RAM
• TMC0280/CD2802: TMS5110A VSP (Voice Synthesis
Processor)
• TMC0350/CD62170: VSM (Voice Synthesis Memory) with
128k Bits
capacity
If you have additions to the above article please email: joerg@datamath.org.
© Joerg Woerner, December 23, 2007. No reprints without written permission.