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Texas Instruments Business Card

Date of introduction:  1979 Display technology:  LCD
New price:  
 $35 (October 1981)
Display size:  8
Size:  3.7" x 2.2" x 0.25"
 95 x 57 x 6 mm3
   
Weight:  1.3 ounces, 38 grams Serial No:  
Batteries:  2*LR54  Date of manufacture:  wk 48 year 1979
AC-Adapter:   Origin of manufacture:  El Salvador
Precision:  8 Integrated circuits:  TP032x
Memories:  1    
Program steps:   Courtesy of:  Stu Mulne
    Download manual:   (US: 4.1 MByte)

This stylish Business Card looks different to all but one Texas Instruments products you know. It is the rare sibbling of the TI-1760 DataCard introduced in 1979. Main difference is the additional row of keys and the 2ND-key never found in a "Basic" calculator. A deeper exploration of the keyboard reveals some financial keys as second function of the operation keys, a layout unknown with calculators developed by Texas Instruments. 

BusinessCard_PCB.jpg (25780 Byte)Dismantling the Business Card reveals a design very similar to the TI-1760 DataCard. No doubts that this cutie uses a calculator chip of the TP0320 family instead the TP0311 of the Basic-line. You know the TP0320 calculator chip from products like:

bulletTP0320    TI Investment Analyst 
bulletTP0321    TI-50
bulletTP0322    TI-Business Analyst-II
bulletTP0323    TI-53
bulletTP0324    TI-35
bulletTP0326    TI-38 and TI-20

But we placed these calculators in the "Scientific and Financial" section of the Museum...

 

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

Business Card

Super slimline LCD for finance and business Ö with Constant memory* feature.

So lightweight and compact that you can take it anywhere. Features positive action keys designed to feel right to your fingers.
Conveniently arranged financial keys compute time and money problems. Profit margin calculations are rapidly handled with cost, sell, or margin keys.
On-the-spot answers become easier: Add-ons, discount percentages, reciprocals, squares, square roots, etc. Full arithmetic memory for added versatility.
TIís Constant Memory* feature retains stored data, even when the calculator is turned off. APD* automatic power down feature. Up to 1,000 hours of normal operation from two miniature batteries.


* Registered Trademark of Texas Instruments Incorporated

© Texas Instruments, 1981

 

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

© Joerg Woerner, January 22, 2003. No reprints without written permission.