Important Notice: Our web hosting provider recently started charging us for additional visits, which was unexpected. In response, we're seeking donations. Depending on the situation, we may explore different monetization options for our Community and Expert Contributors. It's crucial to provide more returns for their expertise and offer more Expert Validated Answers or AI Validated Answers. Learn more about our hosting issue here.
With the fixed-stack models [RPN; e.g. hp42s]: Not really. The stack is mainly used for calculations; it’s too small on the [old] hps. The program tokens still have one [small] operand (as in RCL 7; typical stack languages usually have none). The RPL models [e.g. hp28s, hp50g] do implement a stack language.
