Line Printer via one of: PC via one of: The Casio FX-850P is a scientific calculator introduced in 1987 and sold until 1999.

User's manual at http://www.usersmanualguide.com/casio/calculators/fx-850p The calculator had a BASIC interpreter, MEMO function, a formula library.

With a RP-33 expansion module, this model could be upgraded to a total of 64 kB.

They could be defined by issuing the command DEF CHR$(n)="HHHHHHHHHH" where n ranges from 252 to 255 and the H's are 10 hexadecimal digits (5 bytes).

Via a serial cable the calculator could connect to a PC or to another Casio FX-850P, allowing the transfer to MEMO and stored programs.