Texas Instruments TI-55 III (Italy)

Date of introduction:  1985 Display technology:  LCD
New price:   Display size:  8 + 2
Size:  5.8" x 2.8" x 0.85"
 147 x 72 x 22 mm3
Weight:  3.0 ounces, 84 grams Serial No:  
Batteries:  2*LR44 Date of manufacture:  wk 35 year 1987
AC-Adapter:   Origin of manufacture:  Italy (RCI)
Precision:  11 Integrated circuits:  TP0456/CD4555, CD4556
Memories:  1-8    
Program steps:  56-0 Courtesy of:  Joerg Woerner
Download leaflet:   (US: 0.9 MByte)    

The TI-55 III was slightly redesigned in 1986 and production shifted from sub-contractors in Taiwan to TI facilities in Italy and the United States.

Dismantling this TI-55 III manufactured in August 1987 in Italy reveals a design identical with the the US manufactured TI-55 III.


The TI-55 III is featured in the Texas Instruments Incorporated bulletin CL-872 dated 1985.

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Joerg Woerner, August 4, 2012. No reprints without written permission.