Advances in technology are often responsible for the coinage of retronyms. For example, the term "acoustic guitar" was coined at the advent of electric guitars and were thus renamed to distinguish them from once the latter were invented.
The first bicycles with two wheels of equal size were called "" because they were easier to handle than the then-dominant style that had one large wheel and one small wheel, which then became known as an "ordinary" bicycle. Since the end of the 19th century, most bicycles have been expected to have two equal sized wheels, and the other type has been renamed "penny-farthing" or penny-farthing.
The original Game Boy was referred to as "Game Boy Classic" after the release of Game Boy Color. Another gaming example is the original Xbox being referred to as the Xbox 1 prior to the release of the Xbox One, similarly today it is commonly referred to as the "Xbox Classic" or simply "the original Xbox."