DATAMATH CALCULATOR MUSEUM
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DATAMATH CALCULATOR MUSEUM |
Casio CB-100 Checkbook
| Date of introduction: | 1983 | Display technology: | LCD |
| New price: | Display size: | 8 | |
| Size: | 2.8" x
6.2" x 0.3" 70 x 157 x 7 mm3 |
||
| Weight: | 2.4 ounces, 67 grams | Serial No: | |
| Batteries: | CR2025 | Date of manufacture: | year 1985 |
| AC-Adapter: | Origin of manufacture: | Japan | |
| Precision: | 8 | Integrated circuits: | NEC uPD1826G-009 |
| Memories: | 5+1 | ||
| 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1982 and outdated the Texas Instruments TI-2200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. Casio entered the market of Checkbook calculators in 1983 with
the CB-100 and increased the numbers of memories from three to five. A
less powerful version with only two memories was sold as CB-80.
Casio
fitted the CB-100 Checkbook calculator with a brown sleeve holding a golden pen and
space for a maximum of five credit/debit cards.
The
CB-100 Checkbook calculator is powered by a single 3V Lithium battery.
Dismantling
this CB-100 Checkbook calculator manufactured in 1985 in Japan reveals an
interesting
construction centered around a NEC uPD1826G single-chip calculator circuit with
Mask-ROM Version -009.
Learn more about single-chip calculator circuits used in
Account
Manager Calculators.
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 30, 2019. No reprints without written permission.