DATAMATH CALCULATOR MUSEUM
Texas Instruments BA-II (Taiwan)
|Date of introduction:||1984||Display technology:||LCD|
|New price:||Display size:||8 (5 + 2)|
|Size:|| 5.3" x 2.8" x 0.45"
135 x 70 x 11 mm3
|Weight:||2.3 ounces, 64 grams||Serial No:||1509991|
|Batteries:||2*LR44||Date of manufacture:||mth 03 year 1985|
|AC-Adapter:||Origin of manufacture:||Taiwan (I)|
|Program steps:||Courtesy of:||Joerg Woerner|
This BA-II Executive Business Analyst introduced in 1984 reuses the calculator chip of the original Business Analyst II introduced already 6 years earlier with a completely new design of the housing and manufacturing technology.
A deeper exploration of the BA-II reveals two different designs. One with manufacturing starting in 1984 in Taiwan together with the BA-35, TI-30 III and TI-35 II and one - like its family members BA-35, TI-30 III and TI-35 II - starting in 1985 with production both in the United States and Italy.
Please don't miss the rare prototype BA-III from 1983 - and don't be confused with the BA-III introduced in 1986.
Main difference between these calculator pairs is their origin and internal construction:
|TI-30 III||Taiwan||year 1984||rigid PCB|
|TI-35 II||Taiwan||year 1984||rigid PCB|
|BA-II||Taiwan||year 1984||rigid PCB|
|BA-35||Taiwan||year 1984||rigid PCB|
|TI-30 III||USA, Italy||year 1985||flexible PCB|
|TI-35 II||USA, Italy||year 1985||flexible PCB|
|BA-II||USA, Italy||year 1985||flexible PCB|
|BA-35||USA, Italy||year 1985||flexible PCB|
Dismantling this BA-II manufactured in
March 1985 by
Inventec Corporation in
Taiwan reveals no surprises, the rigid printed circuit board (PCB) is more or
less identical with the BA-35, TI-30 III, and TI-35 II.
The TP0322 single-chip calculator circuit is encapsulated in a traditional Dual-Inline Plastic package and soldered with bended pins on the PCB.
Inspecting the PCB of this BA-II calculator manufactured in March 1985 by Inventec Corporation in Taiwan brought our attention to a small mark reading BAIII-01F, we noticed similar marks already with other calculators manufactured by Inventec Corporation and started compiling a list of the PCB-Marks on calculators manufactured by OEMs for Texas Instruments.
About two years later the solar powered BA-SOLAR was introduced, this calculator uses a brain from Toshiba instead the TI calculator chip.
The BA-II was later replaced with the BA II PLUS. Sandwiched between these two calculators you'll find the rare BA-III.
Compare this traditional calculator with the advanced Business Edge or the powerful Financial Investment Analyst FIA-10.
A very similar calculator was sold from Radio Shack as EC-5100.
New Specialties, Inc. based in Vidalia, Georgia introduced in
1987 with the APOTHECALC
computer an interesting product using the flexibility of the BA-II calculator
design proven already with the
Jeppesen Sanderson Avstar
If you have additions to the above article please email: email@example.com.
© Joerg Woerner, May 13, 2003. No reprints without written permission.