Texas Instruments LADY 1200

Date of introduction:  1975 Display technology:  LED-stick
New price:  $14.88 Display size:  8
Size:  5.5" x 2.8" x 1.4"
 138 x 70 x 35 mm3
Weight:  3.9 ounces, 110 grams Serial No:  S76-260727 
Batteries:  9V  Date of manufacture:  wk 38 year 1976
AC-Adapter:  AC9180 Origin of manufacture:  USA
Precision:   Integrated circuits:  TMS0972
Program steps:   Courtesy of:  Joerg Woerner

TI-1200-Lady_Back.jpg (217097 Byte)This colorful calculator gives you a great lesson about marketing. The only changes compared to the basic TI-1200 were the blue-yellow keyplate and a off-white housing. With this calculator Texas Instruments targeted a new market - the hand-bag of modern women. A second attempt was made 13 years later again with the Nuance. The new color of the housing was obviously used first with the Spirit of '76, please study the serial number of this LADY 1200 carefully.

TI-1200-Lady_PCB.jpg (141073 Byte)Dismantling this LADY 1200 with Date code 3876 LTA and manufactured in September 1976 in Lubbock, Texas reveals reveals an internal construction identical with the TI-1200 Version 3 with a single-sided printed circuit board (PCB) centered around a TMS0972 single-chip calculator circuit based on the TMS1000, the World's first Microcomputer.

Learn more about the evolution of the TI-1200 between March 1975 and its discontinuation in 1977.

Learn more about the different Product Labels used with the TI-1200 - here at the Datamath Calculator Museum we classify the featured LADY 1200 as Hardware Version 3, PCB Type 2 and Product Label Style 3, Blue on White.

Don't miss the rare Texas Instruments 1265 manufactured for Koh-I-Noor Hardtmuth and and the Trio for educational use, including the limited function ABLE calculator, the colorful TI-1205 and TI-1255.

horizontal rule

If you have additions to the above article please email:

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