DATAMATH CALCULATOR MUSEUM
Texas Instruments TI-1797
|Date of introduction:||1985||Display technology:||LCD|
|New price:||Display size:||8|
|Size:|| 5.9" x 3.7" x
150 x 94 x 8 mm3
|Weight:||3.0 ounces, 84 grams||Serial No:|
|Batteries:||n.a.||Date of manufacture:||mth 05 year 1986|
|AC-Adapter:||Origin of manufacture:||Taiwan (C)|
|Program steps:||Courtesy of:||Ken Meine|
|Download leaflet:||(US: 1.2 MByte)||Download manual:||(US: 2.0 MByte)|
stylish small desktop calculator is unique in Texas Instruments' line but
matched the design line of the TI-1768.
In Europe a similar calculator was sold with the TI-608.
Dismantling this TI-1797 manufactured in May 1986 by Cal-Comp Electronics in Taiwan reveals no surprises. A small single-chip calculator circuit probably manufactured by Sharp and a long flexible cable to the LC-display. Please notice that the mold of the housing is prepared for a battery instead of the solar cells..
Inspecting the PCB of this TI-1797 calculator brought our attention to a small mark reading SD3-11, most likely a reference to Type Small Desktop 3 and Revision 1.1 of the design (schematics and layout). We spotted a similar PCB-Mark already with the TI-1795 introduced in 1984 and started compiling a list of the PCB-Marks on calculators manufactured by OEMs for Texas Instruments.
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© Joerg Woerner, April 13, 2009. No reprints without written permission.