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Texas Instruments Investment Analyst

Date of introduction:	1979	Display technology:	LCD
New price:	$50 (October, 1981)	Display size:	8 (5 + 2)
Size:	5.3" x 2.9" x 0.35" 134 x 74 x 9 mm³
Weight:	2.9 ounces, 82 grams	Serial No:	1237196
Batteries:	2*LR44	Date of manufacture:	wk 40 year 1980
AC-Adapter:		Origin of manufacture:	USA
Precision:	11	Integrated circuits:	TP0320
Memories:	1
Program steps:		Courtesy of:	Joerg Woerner

Within the Majestic series Texas Instruments started with the Business Analyst to introduce always a financial counterpart to the scientific calculator. The Business Analyst-II with its combined financial and statistical functions continued this approach.

The TI Investment Analyst removed the statistical functions and improved some of the financial functions.

Dismantling the TI Investment Analyst reveals with the TP0320 C-MOS calculator chip with the first ROM version CD3201. Simply by comparing the designation of the integrated circuits of the calculators you'll get the first members of the slimline family:

	TP0320 (CD3201) TI Investment Analyst
	TP0320 (CD3202) TI-30-II
	TP0321 TI-50
	TP0322 TI-Business Analyst-II
	TP0323 TI-53
	TP0324 TI-35
	TP0326 TI-38 and TI-20

If you compare the sales prices of three (internaly identical) calculators you'll notice:

	$50 Investment Analyst
	$40 Business Analyst-II
	$20 TI-35

That's the power of marketing!

In 1984 the era of the slimline calculators was over and Texas Instruments introduced a family of three calculators manufactured in Taiwan:

	TI-30 III
	TI-35 II
	BA II

Don't miss the rare Business Card, probably the missing calculator using one of the TP032x chips.

If you have additions to the above article please email: joerg@datamath.org.