DATAMATH CALCULATOR MUSEUM
Texas Instruments TI-1795
|Date of introduction:||1984||Display technology:||LCD|
|New price:||Display size:||8|
|Size:|| 4.7" x 4.1" x
120 x 106 x 25 mm3
|Weight:||3.0 ounces, 86 grams||Serial No:|
|Batteries:||n.a.||Date of manufacture:||mth 09 year 1984|
|AC-Adapter:||Origin of manufacture:||Taiwan (C)|
|Program steps:||Courtesy of:||Joerg Woerner|
|Download leaflet:||(US: 0.6 MByte)||Download manual:||(US: 2.0 MByte)|
it a small desktop calculator or a large handheld? From the designation "TI-1795" it
is clearly categorized as a desktop product, from the size it could be a handheld like the TI-508.
Dismantling this TI-1795 manufactured in September 1984 by Compal Electronics, an OEM (Original Equipment Manufacturer) in Taiwan, reveals a clean design centered around an unknown Sharp single-chip calculator circuit soldered on a double-sided printed circuit board (PCB) and powered by solar cells.
Inspecting the PCB of this TI-1795 calculator brought our attention to a small mark reading SD9-13, most likely a reference to Type Small Desktop 9 and Revision 1.3 of the design (schematics and layout). We spotted this PCB-Mark already with the near identical offspring Radio Shack EC-2006A and started compiling a list of the PCB-Marks on calculators manufactured by OEMs for Texas Instruments. Meet Kmart Corporation's KMC 100B - the first born SD9 calculator with Revision 10.
This TI-1795 introduced in 1984 started a line of everlasting calculators, compare it with the TI-1795+ and the TI-1795SV.
Texas Instruments added in 1985 a small bump on key #5 of the TI-1795 and in 1988 the design of the TI-1795 was slightly changed before production was shifted to Thailand in 1991.
The TI-1775 put similar specifications in a foldable housing while the TI-1796 added a battery backup and sports a 10 digits display.
OEM Design SD9 (Small Desktop 9)
This TI-1795 is obviously based on an OEM design shared with other manufacturers, find an overview of the known brands/models here:
|KMC 100B||KMC 7500C|
|Privileg SOLAR 31||Radio Shack EC-2006A|
|Royal DT 80||Dixons Solar Desk|
|Unisonic XL-1105 (1984)||Unisonic XL-1105 (1986)|
If you have additions to the above article please email: firstname.lastname@example.org.
© Joerg Woerner, June 24, 2002. No reprints without written permission.