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),
 TSP60C19 (CMM19018),
 TSP60C19 (CMM19028)
Program steps:   Courtesy of:  Joerg Woerner
    Download manuals:   (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.

Dismantling 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

The Lesefreund is featured in the Texas Instruments Deutschland GmbH leaflet Spielen macht schlau dated 1991.

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If you have additions to the above article please email:

Joerg Woerner, December 5, 2001. No reprints without written permission.