Historically, re humans, a generation has commonly been taken to mean a period of approx 30-years, i.e., the period of time from birth to sexual maturity/reproduction to the raising of the resultant offspring to sexual maturity/reproduction. Vis-a-vis modern societies today, this would have a different perspective...
6 generations
Ten generations
Ten generations
21 generations
19.07 generations
There are many different generations of each iPod. With many different models, the most popular is the iPod Touch, which has had five generations.
There are currently 4 generations.
there are 4 generations of the ipod touch
there are 4 generations of ipod touches
13 generations
4 generations
As of 2013, the iPod has 7 generations, and the iPod touch has 5.