The Samsung Secal 800N is a mid-1970s model, probably built around 1975 or 1976. The calculator has a dedicated calculation chip. it supports the four main arithmetric functions plus percentages and square roots. It also supports negative numbers.
Despite externally looking in good nick, the calculator did not turn on when batteries were fitted. This is a shame as i'm sure the Vacuum Fluorescent Display would have looked superb.
