Every day I use an HP LTO-4 tape drive for backup, they are or at least were good at that. And echoing jhbadger, I still make occasional use of my 2nd HP calcu

Every day I use an HP LTO-4 tape drive for backup, they are or at least were good at that. And echoing jhbadger, I still make occasional use of my 2nd HP calculator, a 28S. Nothing beats RPN.