DATAMATH CALCULATOR MUSEUM
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DATAMATH CALCULATOR MUSEUM |
Texas Instruments SILCA 48
| Date of introduction: | 1977 | Display technology: | LED-stick |
| New price: | Display size: | 8 (5 + 2) | |
| Size: | 5.8" x 3.1" x
1.4" 148 x 78 x 36 mm3 |
||
| Weight: | 4.0 ounces, 114 grams | Serial No: | 32964 |
| Batteries: | 9V or RK2 | Date of manufacture: | wk 39 year 1977 |
| AC-Adapter: | AC9900/R | Origin of manufacture: | Italy (RCI) |
| Precision: | 10 | Integrated circuits: | TMS0981 |
| Logic: | AOS - 4 Pending Operations, 15 () | ||
| Memories: | 1 | ||
| Program steps: | Courtesy of: | Marie Lisa Collas |
SILCA
48 calcolatrice PROFESSIONALE? Obviously a Texas
Instruments
TI-30 in disguise. We were really surprised to receive in
December 2015 this beautiful calculator from fellow collector Marie Lisa Collas. It is obvious that this
SILCA 48 - manufactured for an unknown company in Italy - is a hybrid of two different
products:
| • The basic functionality
is borrowed without any doubts from the
TI-30 introduced in 1976 • The yellow keyboard plate is... unique |
Dismantling
this model professional manufactured in 19778 reveals a standard TI-30 printed circuit
board (PCB) with the well-known TMS0981 single-chip calculator circuit.
Calculator collectors: Please let us know if you have any information about this rare calculator. Thanks.
Don't miss the model professional
manufactured for Koh-I-Noor Hardtmuth.
If you have additions to the above article please email: joerg@datamath.org.
© Joerg Woerner, May 28, 2016. No reprints without written permission.