Terminated: unknown
By the way, later Canon calculators are sometimes called "Palmtronic".
When I found this specimen on the Dutch auction website Marktplaats I couldn’t immediately make out what it was. At first I mistook it for a kind of label writer. Then I noticed its display which actually isn’t a display at all. This calculator is from a time when LED displays were too expensive and other affordable technologies did not yet exist.
It will for ever be a secret when this calculator was used for the last time, but the last result it ever calculated is still "on display" as beging the value "96.5000".
This calculator has quite a large number of rechargeable NiCad batteries, made by Sanyo. I took
the calculator apart because they obviously were leaky. Their damage was minimal fortunately, possibly
because the calculator was stored horizontally. Shown here are the battery packs before I removed them.
There are some very good resources on this early calculator.
The Vintage Calculators Web Museum has a detailed page here (link validated 2026-09-15)
Some other nice information can be found on History of Information here (link validated 2026-09-15)
This page (link validated 2026-09-15) on Computermuseum der Stuttgarter Informatik even has an (FTP) link to its service manual.