Hewlett Packard or HP is a multi million dollar computer company which started making calculators in 1968 so they know a thing or two about making great graphing calculators. For more history of HP's calculators you can visit the wikipedia page here or there's the HP museum of calculators here.
This is what they say about themselves on the HP website:-
"Our vision is to create technology that makes life better for everyone, everywhere — every person, every organization, and every community around the globe. This motivates us — inspires us — to do what we do. To make what we make. To invent, and to reinvent. To engineer experiences that amaze. We won’t stop pushing ahead, because you won’t stop pushing ahead. You’re reinventing how you work. How you play. How you live. With our technology, you’ll reinvent your world. This is our calling. This is a new HP. Keep reinventing."
That's very inspiring stuff and it seems that their vision has allowed them to create this awesome beast...The HP Prime....
It looks amazing doesn't it? So now we know what HP are capable of, let me introduce you to their calculators.