If it doesn't have an Enter key, it's not RPN

[Michael de Estrada]

I received another non-HP RPN calculator today, a Commodore Minuteman 6. It's a basic 4 banger with a 2-level stack with only integer math capability, so 3 += 2 /= yields 1 as the result. It has a switch that illuminates a fixed decimal point LED between the second and third digit from the right side of the display. It is very small, about the size of a pack of cigarettes, and fits easily in my small hand.