Texas Instruments TI-503SV

Date of introduction:  2015 Display technology:  LCD
New price:  $5.00 (SRP 2017) Display size:  8
Size:  4.8" x 3.1" x 0.65"
 121 x 79 x 17 mm
Weight:  2.3 ounces, 65 grams Serial No:  
Batteries:  LR54 (30A) Date of manufacture:  mth 05 year 2017 (J)
AC-Adapter:   Origin of manufacture:  Philippines (L)
Precision:  8 Integrated circuits:  
Memories:  1    
Program steps:   Courtesy of:  Joerg Woerner

We acquired both this TI-503SV and its sibling TI-1706SV when we realized that their production was shifted from China to the Philippines and learned with other calculators like the TI-108 about nice improvements, e.g. larger numbers on the display.

Dismantling this TI-503SV manufactured in May 2017 by Kinpo Electronics in the Philippines revealed a small surprise. At first glance looks the internal construction identical to the TI-503SV manufactured in China but we noticed a small unsoldered jumper on the printed circuit board (PCB).

We expected this jumper to switch between the American decimal point and the German comma, but a second calculator acquired in Germany had the very same jumper unsoldered, too.

Fellow collectors - if you know the secret of this jumper J1 (AM OPEN / M SHORT) - let us know. We closed the jumper with one TI-503SV on purpose but couldn't find any differences in operation.

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If you have additions to the above article please email:

Joerg Woerner, December 28, 2017. No reprints without written permission.