
Unisonic 21
In the 1970s and 1980s, Unisonic released several calculators, each with a different electronic game. The Unisonic 21 plays blackjack: players try to reach as …
Photo: own photograph
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In the 1970s and 1980s, Unisonic released several calculators, each with a different electronic game. The Unisonic 21 plays blackjack: players try to reach as …
Photo: own photograph
Open page