In the 1970s the cost - and size - of calculators tumbled. Business tools became toys; as a result prestige tech companies had to rapidly diversify into other products - or die! This is the story of the 1970s great calculator race... https://t.co/37Uy6o35PX

In the 1970s the cost - and size - of calculators tumbled. Business tools became toys; as a result prestige tech companies had to rapidly diversify into other products - or die! This is the story of the 1970s great calculator race...