DATAMATH CALCULATOR MUSEUM
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DATAMATH CALCULATOR MUSEUM |
Canon card F-56
| Date of introduction: | June 1981 | Display technology: | LCD |
| New price: | Display size: | 8 (5 + 2) | |
| Size: | 6.1" x 3.0" x 0.80" 154 x 75 x 20 mm3 |
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| Weight: | 3.1 ounces, 87 grams | Serial No: | 533234 |
| Batteries: | 2*AA | Date of manufacture: | year 1981 |
| AC-Adapter: | Origin of manufacture: | Japan | |
| Precision: | 11 | Integrated circuits: | NEC uPD1854G |
| Memories: | 1 | ||
| Program steps: | Courtesy of: | Joerg Woerner |
The
Canon F-56 Scientific Statistical Calculator is together with its sibling
F-64 one of the few Canon products
based on NEC single-chip calculator circuits. One of the odd behaviors of the
NEC uPD1854G circuit is the left to right entry method.
Running the Calculator
Forensics on the F-56 reveals with
9.0001495941 an impressive result compared to similar
calculators of the early 80's. On the other hand supports the chip no rounding
of the display results.
The internal construction of the
F-56 is pretty simple and uses only few components on a single-sided printed
circuit board (PCB)..
The later F-58 makes use again of a Toshiba calculator circuit.
If you have additions to the above article please email: joerg@datamath.org.
© Joerg Woerner, March 5, 2006. No reprints without written permission.