The mystery of the rogue HP calculator: 12C or not 12C? That is the question
Brazilian model flummoxes calc fans
For most of us, a calculator might have been superseded by Excel or an app on a phone, yet there remains a die-hard contingent with a passion for the push-button marvels. So the shocking discovery of an apparently rogue HP-12C has sent tremors through the calculator aficionado world.…
