DATAMATH CALCULATOR MUSEUM
Texas Instruments TI-5220
|Date of introduction:||1977||Display technology:||Fluorescent|
|New price:||Display size:||12|
|Size:|| 9.3" x 9.1" x 2.7"
235 x 232 x 68 mm3
|Printer technology:||Thermal TP-20225, TP-27225|
|Weight:|| 3 pounds 9 ounces
|Batteries:||Date of manufacture:||year 1977|
|AC-Adapter:||120 V or 220 V||Origin of manufacture:||Italy|
|Precision:||12||Integrated circuits:||TMS1309, TMC1372|
|Memories:||1 + 1|
|Program steps:||Courtesy of:||Joerg Woerner|
Compare this calculator with it's direct predecessor, the TI-5040. The differences are marginal, instead 10 digits of resolution the TI-5220 displays and prints with 12 digits. Further enhancement is given with the 00-key to enter hundreds and the GT (grand total) feature.
the TI-5220 reveals some well-known elements, e.g. the printer assembly from the
PC-100 printing cradle and two a TMS1309
resp. TMS1372 Single-Chip Microcontroller based on the famous TMS1000
The featured calculator was manufactured in Italy for the European market and is powered with 220 volts.
A desktop calculator with 12 digits capability using normal paper was introduced with the TI-5142 some years later.
Don't miss the really massive TI-5225 introduced in the same year.
If you have additions to the above article please email: email@example.com.
© Joerg Woerner, December 5, 2001. No reprints without written permission.