Ricoh Ricomac 1200 Desktop Calculator
Image Courtesy Martin Willemsen
The Ricoh Ricomac 1200 is an OEM version of the Unicom 1200, manufactured
by the Unicom business unit of AMI (American Micros-ystems, Inc.), and
sold under the Ricoh brand name through an OEM (Original Equipment
Manufacturer) agreement. Unicom served as an OEM manufacturer for a number
of different calculator companies that sold calculators under their own names,
including Ricoh, Commodore, and perhaps others. Subtle variances in cabinet
and keyboard color schemes were used to differentiate the models marketed
by different OEM customers. This calculator was also
marketed by Commodore as the Commodore
412F. The Unicom 1200 was introduced sometime in 1970, with OEM
calculators introduced slightly later.
The Ricomac 1200 is a basic four-function calculator, twelve-digits, fixed
decimal, with constant and round-off feature. The calculator uses a LSI
LSI chipset manufactured by American Micro-systems, Inc.,
individual tube vacuum-fluorescent display technology,
and discrete transistor display drivers. The machine is related
to another calculator in the museum, the
Commodore C112, a
slightly later-version of a Unicom-manufactured machine marketed by Commodore.
Copyright ©1997-2023, Rick Bensene.
All content on this site is not to be gathered, scraped, replicated, or accesed in any way for any use in populating machine learning or intelligence (Artificial Intelligence, a.k.a. AI) databases, language models, graphs, or other AI-related data structures. Such use is a violation of copyright law. Any
such access will be reported to the Oregon Attorney General and prosecuted to the fullest extent the law allows.