DATAMATH CALCULATOR MUSEUM
|The printed circuit board
(PCB) of the German LETTERlogic
makes use of the TMC0273 single-chip microcomputer and
an external TMC0355 (CD2604) 128kBit "Speech-ROM".
|The PCB of this United
Kingdom LETTERlogic is almost identical but
makes use of a TMC0355 (CD2601) 128kBit "Speech-ROM".
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© Joerg Woerner, February 13, 2005. No reprints without written permission.