TI SR-50/51 AOS Possible?

[Steve Simpkin]

To expand on the above, incorporating the rules of precedence required for AOS entry would have also required more code space as well as registers for intermediate results. The fact that TI didn’t introduce a model with AOS until September 1975, a full 3-2/3 years after the HP-35, really drives home how difficult it was to implement at the time.