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Texas Instruments TI-307+

Date of introduction:  1995 Display technology:  LCD
New price:   Display size:  8
Size:  2.4" x 3.6" x 0.30"
 60 x 92 x 8 mm≥
   
Weight:  1.0 ounces, 29 grams Serial No:  
Batteries:  n.a. Date of manufacture:  mth 08 year 1996
AC-Adapter:   Origin of manufacture:  China (N)
Precision:  8 Integrated circuits:  Toshiba T6A73
Memories:  1    
Program steps:   Courtesy of:  Joerg Woerner

The TI-307+ was another "really cheap" calculator introduced in the 1990s. It followed the TI-307 and its sibling TI-7000. Compare the unique styling with the TI-1775+ and TI-2200+ introduced in 1996.

Dismantling this TI-307+ manufactured in August 1996 by Nam Tai Electronics, Inc. in China reveals a typical design of the 1990's centered around a single-chip calculator circuit hiding under a black epoxy-blob.

Rather unusual - the printed circuit board (PCB) of the TI-307+ reveals the part number of its main components, obviously a Toshiba T6A73 circuit.

 


 

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If you have additions to the above article please email: joerg@datamath.org.

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