Casio fx-10
&
Sperry Remington SSR-8
Casio fx-10
Casio fx-10 "scientific calculator"
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").
Made in Japan.
This was the first Casio scientific calculator. The name 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
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.
