1. Meet the iPod touch

In the early summer of 2007, Apple released a little something called the iPhone. Maybe you’ve heard of it. With the iPhone came the promise of an iPod that could be controlled not by a wheel or series of buttons, but the touch of a finger. A few months later, the iPod touch delivered on that promise. A year after that, an updated second-generation (2G) version with a volume switch and an internal speaker appeared. Fast-forward one more year, and there appeared a new iPod touch, similar to the previous year’s 2G iPod touch but with a faster processor and graphics chip.

The iPod touch is sort of a hybrid between a regular iPod and the iPhone. Like the iPhone, the iPod touch bears a touchscreen display that you control by ...

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