DATAMATH CALCULATOR MUSEUM
|Date of introduction:||1984||Display technology:||LCD|
|New price:||Display size:||10 + 2|
|Size:||5.6" x 2.8" x 0.4"|
|Weight:||3.6 ounces||Serial No:||533234|
|Batteries:||2*LR1130||Date of manufacture:||year 1981|
|AC-Adapter:||Origin of manufacture:||Japan|
|Precision:||12||Integrated circuits:||Toshiba T7767S|
|Program steps:||Courtesy of:||Joerg Woerner|
The Canon F-65 Scientific Statistical Calculator adds some features to its sibbling F-58 but sports the same housing and keyboard.
If we run the Calculator
Forensics of the F-65 we discover the same 12-digit precision found on the TI-35
PLUS and TI-52. Dismantling the
F-65 reveals indeed with the Toshiba T7767S single-chip calculator circuit a
well known product.
The internal construction of the F-65, based on the LX-40 calculator, is very sophisticated. Just a small, one-sided printed circuit board (PCB) attached to the LC-display, batteries 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.
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© Joerg Woerner, November 16, 2008. No reprints without written permission.