DATAMATH CALCULATOR MUSEUM
Texas Instruments Lesefreund
|Date of introduction:||1988||Display technology:||n.a.|
|New price:||Display size:|
|Size:||12.0" x 21.5" x 1.7"|
|Weight:||2 pounds 13 ounces||Serial No:|
|Batteries:||4*AA cells||Date of manufacture:||wk 31 year 1990|
|AC-Adapter:||Origin of manufacture:||USA|
|Precision:||Integrated circuits:|| TSP50C42 (CSM42025),
|Program steps:||Courtesy of:||Joerg Woerner|
(DE: 7.4M Bytes)
(DE: 2.2M Bytes)
Nothing else than the German edition of the Super Speak & Read and the Ready...Set...Read! game.
The picture on the left side displays the game in the closed state. Find a picture of the opened toy here.
a Lesefreund manufactured in July 1990 by Texas Instruments in the United States reveals a very efficient internal construction centered around a TSP50C4X
Speech Synthesizer and supported with two TSP60C19
Speech-ROMs compared to the TSP60C80 located in the original Ready...Set...Read!.
We located on the double-sided printed circuit board (PCB) three Integrated Circuits:
• TSP50C42/CSM42025: TSP50C50 VSP (Voice Synthesis Processor) with 8-bit microcontroller and 8k Bytes Mask ROM for both program and voice and
128 Bytes + 16 Nibbles RAM
• TSP60C19/CMM19018: VSM (Voice Synthesis Memory) with 256k Bits
• TSP60C19/CMM19028: VSM (Voice Synthesis Memory) with 256k Bits
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© Joerg Woerner, December 5, 2001. No reprints without written permission.