Hand-held Calculators

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Casio fx-10
&
Sperry Remington SSR-8

Casio fx-10

Casio fx-10
Inside

Casio fx-10 "scientific calculator"

Distinctive features: The first of a long line of Casio hand-held scientific calculators.

Technical details:
8-digits, green vacuum fluorescent display.  The display of the calculator above shows 12345670. The right-most digit is not a faulty 8 but a half-height 0, which was fashionable around this time.

Scientific functions.

4x AA cells.

Main integrated circuit: NEC uPD179C, here date coded 1974.

95 x 150 x 32 mm. (3.75" x 5.9" x 1.3").

Price in U.S.A. in August 1974 was US$99.95[1].

Made in Japan.

This was the first Casio hand-held scientific calculator.  The model number 'fx-10' is derived from the calculator having 10 scientific functions, where "fx" is the scientific designation for function.

Sperry Remington SSR-8

Sperry-Remington SSR-8
Inside

Sperry Remington SSR-8

By comparing these photographs of the Sperry Remington SSR-8, generously provided by Neovo Geesink, with the Casio fx-10 at the top of the page you can see that they are identical apart from the colour and branding.
Casio manufactured several other models for Sperry Remington in the mid-1970s.

Reference

  1. "10-in-1 calculator", Popular Science, August 1974, p81.

Hand-held Calculators

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© Text & photographs copyright Nigel Tout   2000-2021  except where noted otherwise.