Texas Instruments Little Professor (1976)

Date of introduction:  June 13, 1976 Display technology:  LED-stick
New price:  $19.95, 11.95 Display size:  8
Size:  5.0" x 3.5" x 1.1"    
Weight:  4.2 ounces Serial No:  193100
Batteries:  9V  Date of manufacture:  wk 50 year 1977
AC-Adapter:   Origin of manufacture:  USA (MTA)
Precision:   Integrated circuits:  TMS0975
Program steps:   Courtesy of:  Joerg Woerner
    Download manual:   (US: 7.773 kB)

LittleProf_MTA5077_Back.jpg (140033 Byte)Just a cost optimzed version of the original Little Professor. Texas Instruments dropped even the label on the backside of the toy to reduce the bill of material a few cents.

LittleProf_LTA4276_PCB.jpg (131577 Byte)More dramatic changes took place inside the calculator! The housing of the TMS0975 single-chip calculator circuit was shrinked by approximately 30 percent.

During 1980 the Little Professor got additional keys for ON/OFF and LEVEL. Compare them here


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If you have additions to the above article please email:

Joerg Woerner, April 8, 2008. No reprints without written permission.