...If they have any intelligent life and a SETI program in place, they may hear us and answer back.

That's if they don't send us straight to voicemail.

HP is a bit late coming to the party, TI has had "hackable" calculators for years now.

In fact, I bought my first TI just so I could have an affordable Z80 platform to program on. But it's nice to see HP *finally* getting with the program (no pun intended).

BTW, check out ticalc.org