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Texas Instruments TI-503SV

Date of introduction:  1999 Display technology:  LCD
New price:   Display size:  8
Size:  4.5" x 2.8" x 0.45"
 114 x 72 x 11 mm3
   
Weight:  1.7 ounces, 47 grams Serial No:  
Batteries:  LR54 Date of manufacture:  mth 04 year 2000
AC-Adapter:   Origin of manufacture:  China (G)
Precision:  8 Integrated circuits:  Sharp LI3154
Memories:  1    
Program steps:   Courtesy of:  Joerg Woerner

TI-503SV_G0400_P1.jpg (445764 Byte)The TI-503SV followed the TI-503+ and added a square-root function. The TI-501 line of "cheap calculators" started already in the year 1982 and brought us models like the TI-502 or the TI-507.

TI-503SV_G0400_PCB.jpg (297750 Byte)TI-503SV_G0400_BACK.jpg (164940 Byte)Dismantling this early TI-503SV manufactured in April 2000 by Kinpo Electronics, Inc. in China reveals a Sharp LI3154 single-chip calculator circuit using a conventional package.

Later models of the TI-503SV used the more common chip-on-board (COB) technology.

TI-503SV_G0400_IC.jpg (59155 Byte) We know the Sharp LI-3154 calculator chip already from the cheap TI-1726.

 


 

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

Joerg Woerner, July 4, 2002. No reprints without written permission.