DATAMATH CALCULATOR MUSEUM
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DATAMATH CALCULATOR MUSEUM |
Canon F-44
| Date of introduction: | April, 1983 | Display technology: | LCD |
| New price: | Display size: | 8 (5+2) | |
| Size: | 5.4" x 2.8" x 0.4" | ||
| Weight: | 4.0 ounces | Serial No: | |
| Batteries: | 2*LR44 | Date of manufacture: | |
| AC-Adapter: | Origin of manufacture: | Japan | |
| Precision: | 9 | Integrated circuits: | Toshiba T6823 |
| Memories: | 1 | ||
| Program steps: | Courtesy of: | Joerg Woerner |
This
Canon F-44 followed the
Canon card F-42 introduced in 1980 and replaced the
sliding switches with normal keys. The internal construction of the calculator
is similar to the LX-40 basic calculator introduced in
the same year.
Running Mike Sebastian's "Calculator forensics" gives an unacceptable bad result of 8.9789682 instead the expected value close to 9.0000. We know this result from a whole line of Toshiba calculator circuits introduced between 1977 (T3636 found in the Toshiba SLC-8300) and 1982 (T6825 found in the TI-30 SLR).
If you have additions to the above article please email: joerg@datamath.org.
© Joerg Woerner, June 28, 2003. No reprints without written permission.