General convention is that C in the middle of the keybed equates to middle C on a standard 88-key piano, though of course most smaller keyboards provide some way to transpose up or down a couple octaves.
THX, figured it was something Octavian. [)] ]'> do a pair of those things add up to a real piano? Can't tell if there'd be extra keys in that config?
I have ZERO musical talent, I played Clarinet by grim determination/sheer willpower for a while. Managed to reach to about level .025 on the Benny Goodman scale :