DATAMATH CALCULATOR MUSEUM
Texas Instruments TI-1796
|Date of introduction:||1986||Display technology:||LCD|
|New price:||Display size:||10|
|Size:|| 4.7" x 5.0" x
120 x 128 x 20 mm3
|Weight:||3.7 ounces, 105 grams||Serial No:|
|Batteries:||LR54 (30µA)||Date of manufacture:||mth 11 year 1986|
|AC-Adapter:||Origin of manufacture:||Taiwan (I)|
|Program steps:||Courtesy of:||Michel Zwawiak|
Texas Instruments introduced in the United States of America in 1985/1986 a family of three very similar calculators:
|• TI-1796: Basic desktop
calculator with 10 digits display capability and "Dual Power" feature
• TI-1798: TI-1796 with added clock module
• BA-20 Profit Manager: TI-1798 with 6 added keys for COST, SELL, MARGIN calculations
Dismantling this TI-1796 manufactured in November 1986 by Inventec Corporation in Taiwan reveals a clean design centered around an unknown single-chip calculator circuit soldered on a double-sided printed circuit board (PCB) and powered by four solar cells and a small LR54 (LR1130) backup battery.
Please notice the
empty space for the clock module used with the TI-1798 and BA-20 next to the
Inspecting the PCB of this TI-1796 calculator brought our attention to a small mark reading IOTI1796-01A, we spotted this PCB-Mark already with the TI-1798. We started compiling a list of the PCB-Marks on calculators manufactured by OEMs for Texas Instruments.
Don't miss the Technico SB-867 sporting 8 digits display capability in a similar package and the TI-1796+ introduced about 10 years after this first generation TI-1796.
If you have additions to the above article please email: firstname.lastname@example.org.
© Joerg Woerner, April 8, 2011. No reprints without written permission.