DATAMATH CALCULATOR MUSEUM
Texas Instruments Little Professor (1978)
|Date of introduction:||1978||Display technology:||LED-stick|
|New price:||Display size:||8|
x 3.5" x 1.1"
127 x 89 x 29 mm3
|Weight:||3.8 ounces, 107 grams||Serial No:|
|Batteries:||9V||Date of manufacture:||wk 36 year 1979|
|AC-Adapter:||Origin of manufacture:||USA (ATA)|
|Program steps:||Courtesy of:||Joerg Woerner|
You know this cute math trainer, the Little Professor. Millions and millions were sold in the past 2½ decades from this simple but funny educational product. The basic idea behind the Little Professor is opposite to a normal calculator: The child has to type the answer of simple questions like " 3 + 5 = ? ". You can choose between the four basic math functions and four different grade levels. If the child gives a wrong answer "EEE" occurs, otherwise another of more than 16000 different questions is asked.
From the technology this Little Professor from 1978 is similar
to the TI-1000 calculator of the same
epoch. This second version of the Little Professor could easily recognized at
the ON/OFF keys and the LEVEL-key to adjust the grade level. Compare it with the first
version introduced already in 1976.
Dismantling the Little Professor (1978) reveals a surprise - some models use inside a flexible printed circuit board (Flex-PCB) and some a rigid PCB.
The 5th row of the keyboard (OFF, SET and LEVEL) disturbs the design of the Little Professor. Already in 1980 a new, smaller keyboard was available and this one matched the original design. The picture on the right combines this Little Professor (1978) with the later Little Professor (1980).
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© Joerg Woerner, December 5, 2001. No reprints without written permission.