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.

TouchnTell_UK_PCB.jpg (112848 Byte)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



horizontal rule

If you have additions to the above article please email: joerg@datamath.org.

Joerg Woerner, December 23, 2007. No reprints without written permission.