My longtime 'pocket calculator' Sharp EL-5813. Purchased in 1980 and still going strong. It has only needed two sets of batteries in all that time. Complete with authentic patina.
#RetroCalc #Random

I was cleaning my desk out yesterday and came across this gem. I guess I need to remember some RPN.
Some fresh batteries and it lives. Someone gifted me with it because I am in IT, I guess.
#RetroCalc