DATAMATH CALCULATOR MUSEUM
Texas Instruments TI-510
|Date of introduction:||1991||Display technology:||LCD|
|New price:||Display size:||8|
|Size:|| 5.4" x 4.1" x
136 x 106 x 29 mm3
|Weight:||3.5 ounces, 99 grams||Serial No:|
|Batteries:||LR54||Date of manufacture:||mth 12 year 1990|
|AC-Adapter:||Origin of manufacture:||Malaysia (I)|
|Precision:||8||Integrated circuits:||Toshiba T9731BU|
|Program steps:||Courtesy of:||Joerg Woerner|
Nevertheless the identification number TI-510 points to a handheld calculator, it should be called a "small desktop" machine. Outside of Europe an almost identical product was sold as TI-1798 - the nameplate of a desktop calculator.
Dismantling this TI-510 manufactured in
December 1990 by Inventec Corporation in
reveals a clean design centered around a Toshiba T9731BU single-chip calculator
circuit soldered on a double-sided printed circuit board (PCB) and powered by
four solar cells and a small LR54 (LR1130) backup battery
like its identical twin TI-1798 manufactured for the
European market. The battery wasn't used with the first production batches of
the TI-1798 manufactured in Taiwan.
Inspecting the PCB of this TI-510 calculator brought our attention to a small mark reading 1OSB863-01B known already from the TI-1798. 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: email@example.com.
© Joerg Woerner, November 12, 2003. No reprints without written permission.