DATAMATH CALCULATOR MUSEUM
Texas Instruments TI-503SV
|Date of introduction:||1998||Display technology:||LCD|
|New price:||Display size:||8|
|Size:|| 4.5" x 2.8" x
114 x 72 x 11 mm3
|Weight:||1.7 ounces, 47 grams||Serial No:|
|Batteries:||LR54||Date of manufacture:||mth 10 year 1998|
|AC-Adapter:||Origin of manufacture:||Thailand (C)|
|Precision:||8||Integrated circuits:||Sharp LI3154|
|Program steps:||Courtesy of:||Joerg Woerner|
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.
Dismantling this early TI-503SV manufactured in October 1998 by Cal-Comp Electronics, a subsidiary of Kinpo Electronics, Inc., in Thailand reveals a Sharp LI3154 single-chip calculator circuit using a conventional package. Production of the TI-503SV was shifted in 2000 from Thailand to China.
Later models of the TI-503SV used the
more common chip-on-board (COB)
We know the Sharp LI-3154 calculator chip already from the cheap TI-1726.
Inspecting the PCB of this TI-503SV calculator brought our attention to a small marks reading 403T-10-3 and we started compiling a list of the PCB-Marks on calculators manufactured by OEMs for Texas Instruments.
If you have additions to the above article please email: firstname.lastname@example.org.
© Joerg Woerner, February 25, 2021. No reprints without written permission.