Kosmos I & Kosmos Astro

Hand-held Calculators

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Kosmos I biorhythm calculator
&
Kosmos Astro astrological calculator

Kosmos I

Kosmos I biorhythm calculator.

Distinctive features: Biorhythm computer.

Technical details:
Display is 8 digits, green fluorescent.

Four function calculator and Biorhythm computer.

4.5v (3 x AA batteries).

102 x 158 x 33 mm (4.0" x 6.25" x 1.25").

Made in Japan, for Kosmos International (U.S.A), Inc., Atlanta, Georgia.

Can calculate a persons present position in their three biorhythm cycles, Physical, Emotional, and Intellectual.
The manual has an impressive bibliography of books and articles on the theory of biorhythms. It says "Biorhythms are defined as the different cycles your mind and body go through every day. There are three of them. A 23-day physical cycle. A 28-day emotional cycle. And a 33-day intellectual cycle. Your daily position in each of these cycles has a lot to do with how you feel"

The analysis of your Biorhythms was fashionable in the mid-1970s. Kosmos produced several models of calculators for making the calculations in the 1970s, some also sold under the Radio Shack name. They are not uncommon so must have sold reasonably well.

Kosmos Astro

Kosmos Astro astrological calculator.

Distinctive features: Calculator and astrological predictions.

Technical details:
Display is 8 digits, blue fluorescent.

Four function calculator and astrological predictions.

3v (2 x AA batteries).

71 x 120 x 25 mm (2.8" x 4.75" x 1.0").

Made in Taiwan.

You can use this very distinctively styled model for normal calculations and also for astrological predictions.

There is also a version of this calculator under the Radio Shack label, the EC-312 ASTRO.

Biorhythm calculators became quite popular and several companies marketed examples. Douglas Mendez has kindly supplied the following photograph comparing three models.

From left to right, Casio H-801 'BIOLATOR', Radio Shack EC-314 'BIORHYTHM COMPUTER/CALCULATOR, and KOSMOS I.

Vintage Calculators