DATAMATH CALCULATOR MUSEUM |
Texas Instruments TI-1795+
Date of introduction: | 1992 | Display technology: | LCD |
New price: | Display size: | 8 | |
Size: | 4.9" x 4.2" x 1.0" 125 x 106 x 25 mm3 |
||
Weight: | 3.0 ounces, 84 grams | Serial No: | |
Batteries: | n.a. | Date of manufacture: | mth 03 year 1994 (D) |
AC-Adapter: | Origin of manufacture: | Thailand (C) | |
Precision: | 8 | Integrated circuits: | Sharp LI3154 |
Memories: | 1 | ||
Program steps: | Courtesy of: | Joerg Woerner |
Is this TI-1795+ a small desktop calculator or a large handheld calculator? The type designator suggests the "Desktop Category" of the Datamath Calculator Museum, from the size it could easily a "Handheld" like the TI-508 PLUS.
Beside the smooth styling the calculator itself is very plain and looks still like the first TI-1795 introduced already in 1984.
Dismantling
this TI-1795+ manufactured in March 1994 by
Cal-Comp
Electronics in Thailand reveals a very simple construction centered
around a Sharp LI3154 single-chip calculator circuit soldered on a double-sided
printed circuit board (PCB) and powered by solar cells. We noticed this chip during our research about
so-called Checkbook Calculators with the Radio Shack
EC-455.
Learn more about single-chip calculator circuits used in
Account
Manager Calculators.
Inspecting the PCB of this TI-1795+ calculator brought our attention to a small mark reading
SD9L1-10-1, most likely a reference to Type
Small Desktop 9. We spotted a very similar PCB-Mark already with the Radio Shack EC-2006A
and Privileg SOLAR 31 and started compiling a list of the PCB-Marks on calculators
manufactured by OEMs for Texas Instruments.
Within four years the design of the TI-1795+ was changed slightly and an
interesting journey around the globe began. Don't miss:
•
TI-1795+ Second Generation Prototype
Kinpo Electronics (Taiwan),
June 1994 • TI-1795+ Second Generation Cal-Comp Electronics (Thailand), October 1995 and April 1998 • TI-1795+ Second Generation Nam Tai Electronics (China), May 1998 • TI-1795+ Second Generation Kinpo Electronics (China), August 1998 |
In 2000 the TI-1795+ was finally replaced with the stylish TI-1795SV (SuperViewTM).
If you have additions to the above article please email: joerg@datamath.org.
© Joerg Woerner, May 2, 2003. No reprints without written permission.