DATAMATH CALCULATOR MUSEUM
|Date of introduction:||1990||Display technology:||LCD|
|New price:||Display size:||8 (6 + 2)|
|Size:||4.9" x 2.7" x 0.4"|
|Weight:||2.0 ounces||Serial No:|
|Batteries:||2*LR44||Date of manufacture:||mth 06 year 1992|
|AC-Adapter:||Origin of manufacture:||China|
|Program steps:||Courtesy of:||Joerg Woerner|
This Canon F-402 is a typical scientific and statistical calculator of the 1990's and fits into a whole line of products:
• F-402: Statistical calculations
Dismantling the F-402 gives a common design of a OEM calculator assembled in China. Unfortunately the single-chip calculator circuit is soldered the wrong way, we can't decipher the designation.
Running Mike Sebastian's "Calculator forensics" on the F-402 gives a known result of 9.0000278593 and we identify a Toshiba design. This result and the small display size of only 6 digits mantissa and 2 digits exponent recalls products like the Canon F-58 introduced about 1984.
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© Joerg Woerner, March 17, 2004. No reprints without written permission.