DATAMATH CALCULATOR MUSEUM
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DATAMATH CALCULATOR MUSEUM |
Canon F-58
| Date of introduction: | 1984 | Display technology: | LCD |
| New price: | Display size: | 8 (5 + 2) | |
| Size: | 5.6" x 2.8" x 0.4" | ||
| Weight: | 3.6 ounces | Serial No: | |
| Batteries: | LR1130 | Date of manufacture: | year 1986 |
| AC-Adapter: | Origin of manufacture: | Japan | |
| Precision: | 11 | Integrated circuits: | Toshiba T7750S |
| Memories: | 1 | ||
| Program steps: | Courtesy of: | Joerg Woerner |
The
Canon F-58 Scientific Statistical Calculator traces back to the Texas
Instruments TI-31 Solar.
If we run the Calculator
Forensics on the F-58 we discover the same 11-digit precision found on the TI-31
Solar family. If you compare the two calculators you will notice totally
different features, keyboard layout and even number of keys. This gives you a rough
approach of the flexibility designed into the Toshiba calculator chips.
The internal construction of the F-58,
based on the LX-40 calculator, is very sophisticated.
Just a small, one-sided printed circuit board (PCB) attached to the LC-display,
battery and the keyboard. The keyboard itself uses a sandwich of two conductive
foils with an isolating spacer between them. The sheet metal supports the
connections of the PCB to the LC-display and the keyboard.
The FS-51 used the same calculator
circuit with solar-cells instead the batteries, the F-42
misses the statistical functions. Don't miss the odd F-56
introduced in 1981.
If you have additions to the above article please email: joerg@datamath.org.
© Joerg Woerner, September 27, 2002. No reprints without written permission.