DATAMATH CALCULATOR MUSEUM
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DATAMATH CALCULATOR MUSEUM |
Canon CB-8 Checkbook
| Date of introduction: | 1983 | Display technology: | LCD |
| New price: | Display size: | 8 | |
| Size: | 2.8" x
6.0" x 0.3" 70 x 152 x 7 mm3 |
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| Weight: | 2.4 ounces, 69 grams | Serial No: | |
| Batteries: | CR2025 | Date of manufacture: | year 1984 |
| AC-Adapter: | Origin of manufacture: | Japan | |
| Precision: | 8 | Integrated circuits: | NEC uPD1833G |
| Memories: | 3 | ||
| Program steps: | Courtesy of: | Joerg Woerner |
The
Canon Checkbook started the idea of an Account Manager already in
1982 and outdated the Texas Instruments TI-2200
by a few weeks. A
less powerful version with only one memory was sold as Checkbook
Junior.
This unusual Canon CB-8 Checkbook calculator uses the housing of the original
Checkbook but added a red [A↔F] key, we unfortunately miss the operating
manual to understand its function.
Dismantling
this CB-8 Checkbook calculator manufactured in 1984 in Japan reveals a very solid
construction centered around a NEC uPD1833G single-chip calculator circuit and
it seems to be 100% identical with the Checkbook.
Don't miss the Corvus CheckMaster
introduced by MOSTEK already in 1975. This rare product retains the balance of
your memory even when shut off but uses power-hungry electronics.
If you have additions to the above article please email: joerg@datamath.org.
© Joerg Woerner, November 22, 2019. No reprints without written permission.