Canon card F-42

Date of introduction:  August 1980 Display technology:  LCD
New price:   Display size:  8 (5+2)
Size:  5.0" x 2.8" x 0.35"
 127 x 70 x 9 mm3
Weight:  2.4 ounces, 68 grams Serial No:  454095
Batteries:  2*LR44 Date of manufacture:  mth 09 year 1980
AC-Adapter:   Origin of manufacture:  Japan
Precision:  9  Integrated circuits:  Toshiba T3941
Memories:  1    
Program steps:   Courtesy of:  Joerg Woerner

The Canon card F-42 compares with other scientific calculators like the Texas Instruments TI-20 or TI-25. The later F-58 added statistical functions, the F-55S uses a much smaller housing. 

F-42_PCB.jpg (25844 Byte)Even the inside construction of the F-42 is not too exciting, it is very similar to the Toshiba SLC-8280. We noticed the Toshiba T3941 calculator IC already in the Radio Shack EC-476.

The F-42 was replaced with the F-44 sporting an unusual housing. Don't miss the early F-41 sporting still a green VF-Display and the F-32 sporting a rather unique feature set.


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Joerg Woerner, December 7, 2002. No reprints without written permission.