Right well i start uni in 2 weeks so been getting stuff together, on the checklist it says a graphic calculator is needed. They recommend a TI-83, my dad had to use a TI calculator for Open University but his is the TI-80 (thats the only one they said to use). So i was wondering if anyone had a clue as to whats different between them and if i should buy the 83 or stick with the 80 cause they arent cheap unless i get it second hand which is ~£40.
Any helps appreciated as im lost, all i see is a few MHz in processor and no change in a colour screen or anything.