Texas Instruments TI-1250

Date of introduction:  June 1, 1975 Display technology:  LED-stick
New price:  $24.95 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:  1037019
Batteries:  9V  Date of manufacture:  wk 25 year 1977
AC-Adapter:  AC9180 Origin of manufacture:  Hong Kong
Precision:  8 Integrated circuits:  TMS0972
Memories:  1    
Program steps:   Courtesy of:  Joerg Woerner
    Download manual:   (EU: 3.5 MByte)

TI-1250_HK_1.jpg (256454 Byte)Production of the TI-1250 was eventually shifted from US to Hong Kong, probably to lower manufacturing costs during the Calculator Wars.

TI-1250_HK_PCB.jpg (88689 Byte)Dismantling this TI-1250 manufactured mid of 1977 in Hong Kong reveals the latest evolution of the TI-1200 family: The TMS0972 single-chip calculator circuit w/o any additional, passive components.


horizontal rule

If you have additions to the above article please email:

Joerg Woerner, November 26, 2008. No reprints without written permission.