Texas Instruments TI-1722+ CLEAR CALC

Date of introduction:  1996 Display technology:  LCD
New price:   Display size:  8
Size:  4.5" x 2.5" x 0.4"
 115 x 63 x 10 mm3
Weight:  1.6 ounces, 46 grams Serial No:  
Batteries:  n.a. Date of manufacture:  mth 06 year 1995
AC-Adapter:   Origin of manufacture:  China (N)
Precision:  8 Integrated circuits:  
Memories:  1    
Program steps:   Courtesy of:  Joerg Woerner

You feel familiar with this translucent TI-1722+ CLEAR CALC calculator? Compare it with the earlier TI-1706+ and later TI-106. Don't miss the similar HotCalc introduced two years earlier.

Dismantling this TI-1722+ calculator manufactured in June 1995 by Nam Tai Electronics, Inc. in China reveals a clean design centered around an unknown single-chip calculator circuit bonded in Chip-on-Board (COB) technology directly onto a double-sided printed circuit board (PCB) and powered by four solar cells.

Inspecting the PCB of this TI-1722+ calculator brought our attention to two small marks reading TI-1722+ TI-106 and HL302 confirming its relationship to the TI-106. With the TI-1706+ introduced already in 1993 and sporting a TI-106 and DA312 marking, we might miss a TI-106 manufactured between 1993 and 1995 in the Datamath Calculator Museum. We started compiling a list of the PCB-Marks on calculators manufactured by OEMs for Texas Instruments.


ClearCalc™ is a trademark of Texas Instruments.

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© Joerg Woerner, December 5, 2001. No reprints without written permission.