DATAMATH CALCULATOR MUSEUM
Texas Instruments BA-54 Business Programmable
|Date of introduction:||1986||Display technology:||LCD|
|New price:||Display size:||8 (5 + 2)|
|Size:|| 5.8" x 2.8" x 0.85"
147 x 72 x 22 mm3
|Weight:||3.0 ounces, 84 grams||Serial No:|
|Batteries:||2*LR44||Date of manufacture:||wk 26 year 1987|
|AC-Adapter:||Origin of manufacture:||Italy|
|Precision:||11||Integrated circuits:||CD4553, CD4554|
|Program steps:||0-40||Courtesy of:||Joerg Woerner|
|Download leaflet:||(US: 1.1 MByte)||Download manual:||(US: 3.5 MByte)|
If you read the technical comments on the TI-55 III you know the reason why Texas Instruments introduced 1986 the BA-54.
From the technical point of view the calculators are similar, both use identical displays and integrated circuits. The main difference is the quality of the keyboard and the lack of the serial printer port.
Well, they called this calculator now "Business Programmable" but the programming model is identical to other machines of that epoche. You may convert some memory space to program steps, each step simulates one keyboard entry. The only possible branch execution is a unconditioned restart (RST) to the begin of the key sequence.
Compare the appearence with its predecessor BA-55.
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© Joerg Woerner, December 5, 2001. No reprints without written permission.