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Texas Instruments TI-1895
The
TI-1895 Metric Converter introduced in 1984 added solar cells to
the TI-1889 launched already in 1982 and matches
perfectly the design of the TI-1766.
Dismantling this TI-1895 Metric Converter manufactured in
April 1986 by Toshiba Corporation in Japan reveals a very clean design centered around a Toshiba T6856S
single-chip calculator circuit soldered on a single-sided printed circuit board
(PCB) and powered by five large solar cells.
Inspecting
the PCB of this TI-1895 calculator brought our attention to a small mark reading
TI-1895 21, obviously a reference to TI-1895 and revision
21 (layout) of the PCB. We started compiling a list of the
PCB-Marks on calculators
manufactured by OEMs for Texas Instruments.
If you are interested in really powerful metric conversion calculators, look for either
the Canon FC-80 or the TI-1890.
The TI-1895 was replaced in 1986 with the stylish TI-1895 II.
If you have additions to the above article please email: joerg@datamath.org.
© Joerg Woerner, December 5, 2001. No reprints without written permission.