DATAMATH CALCULATOR MUSEUM
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DATAMATH CALCULATOR MUSEUM |
Texas Instruments BA-20
| Date of introduction: | 1986 | Display technology: | LCD |
| New price: | Display size: | 10 | |
| Size: | 4.7" x 5.0" x
0.80" 120 x 128 x 20 mm3 |
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| Weight: | 3.9 ounces, 110 grams | Serial No: | |
| Batteries: | LR41 + LR1130 (30µA) | Date of manufacture: | mth 02 year 1989 |
| AC-Adapter: | Origin of manufacture: | Taiwan (I) | |
| Precision: | 10 | Integrated circuits: | |
| Memories: | 1 | ||
| Program steps: | Courtesy of: | Larry Corrado | |
| Download leaflet: | 
(US: 1.1 MByte) |
Texas
Instruments introduced in the United States with the BA-20 a very useful calculator.
Beside the basic calculator functions 6 additional keys enable the COST, SELL,
MARGIN calculations. You enter either two of the variables and get instantly the
result of the remaining value. The sibblings TI-1798
and TI-1796 introduced in the same timeframe lacked
the financial calculation and other features.
A
small clock module with its own battery gives additional functionality to the
Profit Manager.
This first generation BA-20 Profit Manager introduced in 1986 makes use of a small sliding switch to select between the power sources. The second generation of the BA-20 replaced the switch with smart electronics.
In Europe a very similar calculator was sold as TI-620.
Don't miss the BA-45 Micro Business Manager and the rare TI-5310 Business Manager.
If you have additions to the above article please email: joerg@datamath.org.
© Joerg Woerner, December 25, 2001. No reprints without written permission.