In 2010, Steve Jobs presented to the whole world the first iPad tablet that had a 9.7-inch screen with 1024 x 768 resolution, a 1GHz processor, 256 MB RAM, 10 hours of autonomy and was available in one color. A year later the iPad 2 tablet was presented and it brought two cameras, a dual-core processor, had a slightly modified design, double the amount of RAM and was thinner but could be purchased in a white or black version. This year Apple introduced a Retina Display that is still 9.7 inches but has a double resolution of 2048 x 1536 pixels, the design was slightly modified and the tablet is thicker, the processor has the same frequency but the graphic chip is quad-core and the tablet can work on 4G networks.
Looking at the graph above, we notice that at first glance the iPad tablet has not evolved that much over the years, but in reality things are different because the specifications themselves do not bring to the fore everything that Apple has modified.
