Texas Instruments TI-1105 (white)

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 09 year 1991
AC-Adapter:   Origin of manufacture:  China (N)
Precision:  8 Integrated circuits:  
Memories:  1    
Program steps:   Courtesy of:  Stefan Klaes

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. 

TI-1105N_PCB.jpg (40329 Byte)Dismantling the TI-1105 is a funny experience, the technology is identical with the Canon LC-25H. Both calculators sport the letter "N" in the Date code, a hint of the manufacturer Nam Tai Electronics, Inc. in China.

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

The TI-1105 was available in a grey housing, too.


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Joerg Woerner, October 20, 2004. No reprints without written permission.