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Texas Instruments TI-18

Date of introduction:  1982 Display technology:  LCD
New price:   Display size:  8 
Size:  3.9" x 2.4" x 0.30"
 100 x 60 x 8 mm3 
   
Weight:  1.6 ounces, 44 grams Serial No:  10 454171
Batteries:  2*LR43 Date of manufacture:  
AC-Adapter:   Origin of manufacture:  Taiwan
Precision:  8 Integrated circuits:  NEC uPD1831G
Memories:  1    
Program steps:   Courtesy of:  Joerg Woerner

This is really a funny scientific calculator! An identical calculator was sold as TI-1744, the name convention of a BASIC calculator. But we know this confusion from other "scientific" calculators of this era. Remember the TI-15.

TI-18_IC.jpg (36270 Byte)TI-18_PCB.jpg (35043 Byte)Dismantling the TI-18 reveals indeed an identical single-chip calculator circuit manufactured by NEC.

The design of the TI-18 was slightly changed during the production run. Please notice the "AUTO SHUT OFF" description found on later TI-18.

TI-18? Read more about Chinese Lucky Numbers.

 



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

Joerg Woerner, October 18, 2004. No reprints without written permission.