[4] All members of this series are programmable, use Reverse Polish Notation, and feature continuous memory.

Poor sales led to a very short market life, making it one of the most difficult of the series to find today.

A number of specialized functions are provided to assist the programmer, including left- and right-shifting, masking, and bitwise logical operations.

These keystroke programs, in addition to performing any operation normally available on the keyboard, can also make use of conditional and unconditional branching and looping instructions, allowing programs to perform repetitive operations and make decisions.

The available programming features differentiate between the various HP Voyager series calculator systems.

[9] The WRPN Calculator, a public domain open-source HP-16C simulator, is one of the oldest yet active software project of the such type.

[10][11] In 2011, the continued popularity of the Voyager series among users prompted SwissMicros (originally called RPN-Calc) to produce a series of credit-card-sized calculators looking like miniature versions of their HP equivalents and running the original HP firmware in an emulator on a modern calculator hardware.