It's all about mathematics and calculators
Taking some time from my math blog to speak about today. This is a day we in the United States will never forget. Blessings to the families who suffered the losses on that horrible day in 2001. May this world find peace soon.
Retro Review: HP 65 Quick Facts Company: Hewlett Packard Years: 1974 - 1977 Type: Scientific, RPN (Reverse Polish Notation) Mem...
