HP calculator character set refers to various calculator character sets used in calculators manufactured by Hewlett-Packard.

These include:

• FOCAL character set, a character set used by some calculators supporting the FOCAL programming language between 1979 and 1995
• Modified HP Roman-8, a variant of Hewlett-Packard's Roman-8 used on some calculators between 1986 and 2015
• RPL character set, a character set used on various Hewlett-Packard RPL calculators between 1989 and 2015
• Unicode, a character set used on some new calculators since 2011 (39gII, Prime)^{[lower-alpha 1]}

• Calculator character sets

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