My personal calculator history

[Steve Simpkin]

My history:

Most of my HP history is listed in a post I made in the Memories forum in 2000 titled: It Still Works As Good As The Day I Bought It. It is surprising how little has changed in the past 24 years.

I used HP calculators exclusively through High School, College and my 40 year career as an Electrical Engineer. There were times in the 1970's, 1980's and 1990's where I used my [current model at the time] HP calculator 5 days a week, sometime 3-6 hours a day. That included the following HP models: HP-25 (1977-1987), HP-11C (1987-1988), HP-28C (1988-1990), HP-28S (1990-1991) and HP-48SX (1991-2018). Now I don't use them that often for work. When I do need a calculator for a quick calculation at work, I grab one of the 7 or so HP, TI and Casio calculators I have sitting near me at all times. When I am not working, I usually use one of my many HP calculator apps on my phone.