Texas Instruments TI-1100 II (Prototype)

Date of introduction:  (1985) Display technology:  LCD
New price:   Display size:  8
Size:  4.4" x 2.6" x 0.35"
 112 x 65 x 8 mm≥
Weight:  1.8 ounces, 51 grams Serial No:  
Batteries:  LR43 Date of manufacture:  mth 10 year 1984
AC-Adapter:   Origin of manufacture:  Taiwan (I)
Precision:  8 Integrated circuits:  Toshiba T6958S
Memories:  1    
Program steps:   Courtesy of:  Joerg Woerner

The TI-1100 II followed the short-lived TI-1100 introduced in 1983 and features an enhanced keyboard.

Dismantling this TI-1100 II Prototype manufactured in October 1984 by Inventec Corporation in Taiwan reveals a clean design centered around a Toshiba T6985S single-chip calculator soldered on a single-sided printed circuit board (PCB) and powered by a LR43 battery. Please notice that the original TI-1100 used a single-sided PCB too, while the final design of the TI-1100 II switched to a double-sided PCB.

Inspecting the PCB of this TI-1100 II Prototype calculator brought our attention to two small marks reading ITI1100-02A respectively ITI1101-02A and we started compiling a list of the PCB-Marks on calculators manufactured by OEMs for Texas Instruments.


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© Joerg Woerner, May 20, 2020. No reprints without written permission.