Texas Instruments TI-1100 II (1st design)

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 03 year 1985
AC-Adapter:   Origin of manufacture:  Taiwan (I)
Precision:  8 Integrated circuits:  Toshiba T6958S
Memories:  1    
Program steps:   Courtesy of:  Joerg Woerner
Download leaflet:   (US: 0.6 MByte)    

TI-1100-II_I0385_P1.jpg (167044 Byte)The TI-1100 II received an enhanced keyboard compared to the original TI-1100 introduced two years earlier, please study the sales box of a TI-1100 II sold in 1985 in the United States. Another few years later a similar calculator appeared again as TI-1100.

TI-1100-II_I0385_IC.jpg (210501 Byte)TI-1100-II_I0385_PCB.jpg (208321 Byte)Dismantling this featured TI-1100 II from the 1st design manufactured in March 1985 by Inventec Corporation in Taiwan reveals a clean design centered around a Toshiba T6985S single-chip calculator soldered on a double-sided printed circuit board (PCB) and powered by a LR43 battery.

Inspecting the PCB of this TI-1100 II calculator brought our attention to a small mark reading IOOTI1100-02D and we started compiling a list of the PCB-Marks on calculators manufactured by OEMs for Texas Instruments.

Within one year the display size of the calculator was slightly increased, please notice the width of the display frame of the 2nd design of the TI-1100 II.



The TI-1100 II is featured in the Texas Instruments Incorporated bulletin CL-858 dated 1985.


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© Joerg Woerner, April 23, 2008. No reprints without written permission.