DATAMATH CALCULATOR MUSEUM
|
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 1614 grams |
Serial No: | 82225 |
| 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.
Dismantling
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
core.
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: joerg@datamath.org.
© Joerg Woerner, December 5, 2001. No reprints without written permission.