DATAMATH CALCULATOR MUSEUM
|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|
|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: firstname.lastname@example.org.
© Joerg Woerner, September 27, 2002. No reprints without written permission.