P→R, R→P, Vector Arithmetic and HP-35

[Steve Simpkin]

Yes, "Time is short and ROM is full" really applied back in 1971 when they were pushing the state-of-the-art to develop the HP-35. Add to that the question of whether enough people would pay the princely sum of $395 to replace their $25 slide rule to make the project profitable. And if, for some reason, the HP-35 was a success, there would always be the opportunity to sell an improved model.