Artificial intelligence puts powerful new technology in consumers' hands — if they can afford to use it.  The rise of AI requires enormous computing power, which in turn is leading to a shortage of memory chips. That's pushing up the price of personal computers, according to analysts with Oxford Economics — the first time those prices have risen since the early 1980s. Computer costs had steadily declined over the past 40 years until the AI boom reversed that trend.  Recently, the cost of