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Dero Research and Development "Sage 1" Desktop Calculator
Little is known about Dero Research & Development, the company that developed
the Sage 1 electronic calculator. It is know that Dero did design and
manufacture very high quality military radio equipment. Introduced
in the mid-1960's, Dero branched out with their own electronic calculator,
the Sage 1. This machines was the one and only calculator produced by
Dero Research & Development. The machine had a 10-digit neon-based
seven-segment display, with 20-digit capacity. The machine had no provisions
for calculations involving decimal points. Documented in May, 1967
Radio-Electronics magazine.