Just one more calculator, bro, just one more, I swear it's the last one

I'm not much of a collector of things. Long ago I decided that on the retro-computing front I would not collect any machines that weren't very significant to me. So, my "collection" consists of a KIM-1 , Sharp MZ-80K , Research Machines 380Z and 480Z, BBC Micro Model B , an IBM ThinkPad 701C , and a Minitel (well, two ). But calculators are where I come closest to not being able to resist.…