Commodore S61
Commodore S61.
Display is scientific, 10 digits mantissa & 2 digits exponent, green fluorescent.
Statistical functions.
Main integrated circuit - MOS MPS 7201, here date coded late 1977.
3.6v (3 x AA) rechargeable.
102 x 158 x 33 mm (4.0" x 6.25" x 1.25").
Made in England (circuit board is made in Japan).
Commodore produced a range of scientific, financial, and statistical calculators in the late 1970s with an impressive array of keys. The large N60 (for navigation calculators) and the S61, here, were the ultimate models having 60 keys, most having more than one function.
