DATAMATH CALCULATOR MUSEUM
|
DATAMATH CALCULATOR MUSEUM |
Canon Checkbook III
| Date of introduction: | Display technology: | LCD | |
| New price: | Display size: | 8 | |
| Size: | 2.8" x
6.0" x 0.35" 70 x 152 x 8 mm3 |
||
| Weight: | 2.2 ounces, 63 grams | Serial No: | |
| Batteries: | LR54 | Date of manufacture: | |
| AC-Adapter: | Origin of manufacture: | Thailand | |
| Precision: | 8 | Integrated circuits: | Toshiba T7752S |
| Memories: | 3 | ||
| Program steps: | Courtesy of: | Joerg Woerner |
The
Canon Checkbook III "Money Manager" continued the idea of an Account
Manager introduced already in 1982 with the Checkbook
and the beautiful Checkbook II.
It is very similar to the Texas
Instruments TI-2200+. Please find an overview of the
PCB-Marks we discovered so far on Account Manager calculators.
Dismantling
this Checkbook calculator manufactured in Thailand reveals a very solid
construction centered around a Toshiba T7752S single-chip calculator circuit.
Inspecting the PCB of this
Checkbook III manufactured in Thailand brought our attention to a small mark reading
CB-10,
most likely a reference to Type CheckBook and Revision 1.0
of the design (schematics and layout).
Learn more about single-chip calculator circuits used in
Account
Manager Calculators.
In 2003 this Checkbook III was still available
in some stores in the United States together with the ultimate Checkbook Recorder.
If you have additions to the above article please email: joerg@datamath.org.
© Joerg Woerner, December 5, 2001. No reprints without written permission.