DATAMATH

DATAMATH CALCULATOR MUSEUM

Canon card F-32

Date of introduction:	August 1980	Display technology:	LCD
New price:		Display size:	8
Size:	5.0" x 2.8" x 0.35" 127 x 70 x 9 mm³
Weight:	2.4 ounces, 68 grams	Serial No:	363308
Batteries:	2*LR44	Date of manufacture:	year 1980
AC-Adapter:		Origin of manufacture:	Japan
Precision:	8	Integrated circuits:	NEC uPD1831G
Memories:	1
Program steps:		Courtesy of:	Joerg Woerner

This Canon card F-32 Mathematic Calculator introduced in 1980 features some rather unusual keys:

• [ON] in addition to a mechanical ON/OFF Switch
• [()]
• [RV]
• [DS]

What makes the F-32 really unique is the [DS] key which allows to select the setting of the entry mode:

• [DS][F] Indicator (--) Floating decimal with manual insertion of the decimal using the [.] key
• [DS][+] Indicator (AM) Add mode with the decimal automatically put in the dollars and cents position (0.00)
• [DS][0]..[4] Indicator (0)..(4) Fixed decimal display with zero to four digits behind the decimal point (x.)..(x.yyyy)

We recognize this functionality from so-called Checkbook Calculators, compare with the National Semiconductor NS103A Data Checker.

Dismantling the Canon card F-32 reveals consequently a design centered around a NEC uPD1831G single-chip calculator circuit, a single memory variant of the uPD1833G found in most Checkbook calculators developed in the 80s.

Learn more about single-chip calculator circuits used in Account Manager Calculators and don't miss the Canon card F-42.

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