Gameboy, new, '93
N64, new, at release
PS2, new, about 2 years after release
360, new, about 2 years after release
360, used, about 2 years after that
C64, '84
IBM AT, '89?, upgraded over the years, may as well have been a new computer by '94
New PC, '99
New PC, '06
New PC, '10
Might have missed a generation in there somewhere.