DATAMATH CALCULATOR MUSEUM
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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
0.30" 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) | |
| Precision: | 8 | Integrated circuits: | |
| Memories: | 1 | ||
| Program steps: | Courtesy of: | Ken Meine | |
| Download leaflet: | 
(US: 1.2 MByte) |
Download manual: |
(US: 2.0 MByte) |
This
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.
If you have additions to the above article please email: joerg@datamath.org.
© Joerg Woerner, April 13, 2009. No reprints without written permission.