Texas Instruments TI Business Analyst-I

Date of introduction:  1979 Display technology:  LED-stick
New price:  $24.95
 $20.00 (October, 1981)
Display size:  8 (5 + 2)
Size:  5.8" x 3.1" x 1.4"
 148 x 78 x 36 mm3
Weight:  4.0 ounces, 114 grams Serial No:  3006986
Batteries:  9-Volt or RK2 Date of manufacture:  wk 26 year 1981
AC-Adapter:  AC9132 Origin of manufacture:  USA
Precision:  11 Integrated circuits:  TMC0982
Logic:  AOS - 4 Pending Operations, 15 ()    
Memories:  1    
Program steps:   Courtesy of:  Joerg Woerner

The Business Analyst-I was introduced 1979 as a facelifted low-budget version of the Business Analyst.

The rechargeable battery pack was replaced by a simple 9V cell and the usage of a metal key plate gave a more modern appearance. Battery consumption of the Business Analyst-I was horrible, marketing guys from TI invented the after market sales of "Rechargeable Kits"  RK2. They used two AA-cells and a step-up converter to generate the 9V of the calculator.

The next step in cost reduction was the usage of the simple, black keys of the TI-30 and a printed key plate. Have a view of the Money Manager.

Based on the technology of the Business Analyst-I a custom specific business calculator was created. Have a look on the Goulds Pumpulator.

Later in production, about in September 1981, the metallized TI logo was replaced with an un-metallized one. View here the Business Analyst-I w/o chrome.

Don't miss the rare TI-30/super manufactured for Koh-I-Noor Hardtmuth


Find here an excerpt from the Texas Instruments Incorporated leaflet CL-199J dated 1981:

TI Business Analyst-I

Economical business calculator for students and professionals.

Marketing. Insurance. Real estate Investments. Personal finance. Buying, selling, trading: Pre-programmed functions make it easy to use. Three keys deal with cost/sell margins. Five keys handle compound interest, annuity calculations, and other future/present value problems.
Statistical capability: Linear regression and trend analysis (to forecast sales, earnings). Also 15 sets of parentheses and a versatile 4-function memory.
Operates on a disposable 9-volt battery (not included). An optional accessory kit is available.
Keys to Money Management. An easy-to-understand reference with step-by-step examples included.

Texas Instruments, 1981

horizontal rule

If you have additions to the above article please email:

Joerg Woerner, December 5, 2001. No reprints without written permission.