Texas Instruments TI-1025

Date of introduction:  June 1977 Display technology:  Fluorescent
New price:  $11.77, 8.95 Display size:  8
Size:  5.4" x 2.8" x 1.3"
 138 x 72 x 32 mm3
Weight:  3.5 ounces, 98 grams Serial No:  3631918
Batteries:  9V  Date of manufacture:  wk 45 year 1977
AC-Adapter:  AC9180 Origin of manufacture:  Hong Kong
Precision:  8 Integrated circuits:  TMC0923
Memories:  1 Displays:  Itron FG85C1
Program steps:   Courtesy of:  Joerg Woerner
    Download manual:   (US: 1.0M Bytes)

TI-1025_PCB.jpg (43854 Byte)Introduced together with the TI-1000 this one uses a fluorescent display and the keyboard layout of earlier models like TI-1265 and TI-1650

A similar model with some enhanced features was the TI-1050.

The calculators were manufactured either in El Salvador, Hong Kong, Spain or USA.

Calculators with different keyplates were sold from Western Auto as Citation and the Dutch department store HEMA.


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If you have additions to the above article please email:

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