Texas Instruments TI-1105 (grey)

Date of introduction:  1991 Display technology:  LCD
New price:  ($4.60 in 2001)  Display size:  8
Size:  4.1" x 2.4" x 0.45"
 105 x 62 x 12 mm3
Weight:  1.5 ounces, 43 grams Serial No:  
Batteries:  LR189 Date of manufacture:  mth 05 year 1993
AC-Adapter:   Origin of manufacture:  China (N)
Precision:  8 Integrated circuits:  
Memories:  1    
Program steps:   Courtesy of:  Joerg Woerner

This TI-1105 introduced in 1991 is completely different to the original TI-1105 sold 5 years earlier. The solar cells were replaced by a small battery and instead a colorful design only a white or grey housing was available.

Dismantling the TI-1105 calculator reveals a standard design using a single-chip calculator circuit wire-bonded direct on the printed circuit board (PCB). 

We knew the printed circuit board (PCB) already from the identical TI-1100+.

Don't miss the TI-1105 in a white housing.

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If you have additions to the above article please email:

Joerg Woerner, October 26, 2007. No reprints without written permission.