DATAMATH CALCULATOR MUSEUM
|This rare Speak & Spell
"Professor" was manufactured
1990 by Texas Instruments in China.
|The housing of the Speak
& Spell "Professor" uses obviously the original mold
from a 1980 model.
|The inside view of the
Speak & Spell "Professor" looks at first
but their are a lot of differences to the western Speak & Spell's to discover.
electronics of the Speak & Spell "Professor" manufactured in 1990 with
the display electronics
on the upper PCB (printed circuit board) and the main electronics on the lower PCB.
|The PCB of the Speak &
Spell "Professor" manufactured in 1990 is centered
around the TSP50C42 single-chip speech synthesizer.
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© Joerg Woerner, August 13, 2010. No reprints without written permission.