Programming
The HP-41C is keystroke programmable, meaning that it can remember and later execute sequences of keystrokes to solve particular problems of interest to the user. 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 HP-41C still supports indirect addressing with which it is possible to implement a Universal Turing machine and therefore the programming model of the HP-41C can be considered Turing complete.
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