DATAMATH

DATAMATH CALCULATOR MUSEUM

Canon F-402

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
Precision:	11	Integrated circuits:
Memories:	1
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
• F-502: Statistical calculations, Base conversions
• F-603: Statistical calculations, Logical calculations
• F-700: 2-variable statistical calculations, Complex numbers, Equation solver, Programmable

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.

If you have additions to the above article please email: joerg@datamath.org.