DATAMATH CALCULATOR MUSEUM
Texas Instruments Little Professor (1985)
|Date of introduction:||Jan. 5, 1985||Display technology:||LCD|
|New price:||$18.95||Display size:||8|
|Size:||5.3" x 3.3" x 1.3"|
|Weight:||3.5 ounces||Serial No:|
|Batteries:||2*AA||Date of manufacture:||wk 43 year 1986|
|AC-Adapter:||Origin of manufacture:||USA (LTA)|
|Program steps:||Courtesy of:||Joerg Woerner|
Compared with the early Little Professor with the LED display this one uses a LC-Display to ask the child one of thousands pre-programmed math questions.
This Little Professor manufactured 1985 looks very similar to
the version Little Professor (1982) with a solid brown backround instead this black-red
Disassembling the Little Professor reveals a cost optimized design combining two key technologies:
|• Flexible printed circuit board, single-chip calculator
borrowed from the TI-50 introduced already June 1978.
• Membrane keyboard technolgy introduced with the Speak & Spell in 1980.
The single-chip calculator circuit Texas Instruments CD4570 is based one the TMS1000 Microcomputer family but added some features known from the TI-55 II.
In Europe a version of the Little Professor with normal keys instead the membrane keyboard appeared. Don't miss the Little Professor (1985 Europe).
If you have additions to the above article please email: firstname.lastname@example.org.
© Joerg Woerner, December 5, 2001. No reprints without written permission.