early 80's BigTrak was very popular, i brought mine to science class when we were focusing on logo. these were cloned and given update fanfare but no new mode

early 80's BigTrak was very popular, i brought mine to science class when we were focusing on logo. these were cloned and given update fanfare but no new models yet https://en.wikipedia.org/wiki/Big_Trak https://en.wikipedia.org/wiki/Big_Trak i guess amazon took up the torch