DATAMATH CALCULATOR MUSEUM
Canon M-10 II
|Date of introduction:||January 1987||Display technology:||Fluorescent|
|New price:||Display size:||10|
|Size:|| 5.6" x 5.0" x
142 x 128 x 43 mm3
|Weight:||8.3 ounces, 234 grams||Serial No:||034049|
|Batteries:||2*AA||Date of manufacture:||mth 12 year 1987|
|AC-Adapter:||AD-2||Origin of manufacture:||Japan|
|Precision:||10||Integrated circuits:||HD38401A (7A 15)|
|Program steps:||Courtesy of:||Joerg Woerner|
introduced in 1986 with the M-8 and M-10 a pair of stylish "battery-operated
small desktop calculators" as successors of the Canola L813
and Canola L1011, respectively. While this M-10 II still
sports the M-10 designation, states the product label on the backside of the
calculator clearly M-10 II.
Dismantling the featured M-10 II calculator manufactured in December 1987 in Japan reveals a very cost-effective design centered around a Hitachi HD38401A single-chip calculator known already from the Canola L1011 introduced in 1978 and the Canola L-3 introduced in 1979.
The Hitachi HD38401A is soldered onto a single-sided printed circuit board (PCB) and connected to a 10-digit Vacuum Fluorescent Display (VFD), a keyboard assembly using a second single-sided PCB and powered by 2 AA-sized alkaline batteries.
Looking closer at the PCB you'll notice the unusual 36-pin package of the HD38401A.
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© Joerg Woerner, February 18, 2023. No reprints without written permission.