Casio brand scientific calculator model FX-850P Personal Computer Scientific Library 116, in perfect condition, with its case, practically never used and has been stored for more than 25 years. It is from the early 1990s of the 20th century.
The 2 new CR2032 batteries have been put in it and it works perfectly but it also has an internal memory battery, model CR1220, which has not been changed and I suppose it is exhausted.
A series of pdf files are delivered, including the manuals in Spanish and English, libraries and information about the machine. A set of mini screwdrivers placed in a metal pen-shaped tube is also given away.
It is not a calculator to use, only for people who are experts in this type of machines and in computer programming, since it is rather a powerful mathematical mini PC.
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