TI-59

TI-59 is a programmable calculator or mobile device.

Overview

The record gives 1977 as its date of establishment or first appearance. Catalogue entries for instruments state maker, signature, completeness and working condition. VALÉORINE records this subject so that lots referring to it can be described consistently.

In detail

programmable calculator with magnetic card reader produced by Texas Instruments from 1977

Sources

Each source is named with the standing the house places on it, so the evidence can be weighed rather than taken on trust.

reference work · Reputable secondary · Wikipedia
“TI-59 / TI-58”, English Wikipedia, consulted as further reading
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reference work · Reputable secondary · Wikidata
Wikidata, structured authority record Q659539: TI-59
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