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Texas Instruments TI-2700 Mini Data Bank

Date of introduction:  1987 Display technology:  LCD 
New price:   Display size:  6 char + 12 digits 
Size:  5.5" x 2.6" x 0.4"    
Weight:  2.9 ounces Serial No:  
Batteries:  3 * LR43 + CR1220 Date of manufacture:  mth 10 year 1987
AC-Adapter:   Origin of manufacture:  Taiwan (I)
Precision:  8 Integrated circuits:  CPU: Toshiba Txxxx
 RAM: Sanyo LC3518
Memories:  2.8kB RAM    
Program steps:   Courtesy of:  Joerg Woerner
    Download manual:   (US: 3.2 MByte)

This TI-2700 Mini Data Bank sold in Germany features a different coloring schema but is otherwise identical with the International version. 

MiniDataBank_2_PCB.jpg (129179 Byte)Dismantling this TI-2700 Mini Data Bank manufactured in October 1987 by Inventec Corporation in Taiwan reveals an interesting design centered around a Toshiba Application Specific CPU and an additional RAM chip with 2k Byte capacity.
Please notice the three LR43 working batteries supported by a CR1220 backup battery to maintain the data of the memory.

 



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

Joerg Woerner, January 8, 2007. No reprints without written permission.