The document discusses the history of personal computers from their introduction in 1975 to modern times. It notes that the first personal computer was the MITS Altair which had 256 bytes of RAM compared to today's computers that have 1-2 gigabytes on average. In the late 1990s, 60% of households owned personal computers, which increased to 62% by 2003. Personal computers have significantly increased in power and decreased in price over time, becoming ubiquitous tools that over half of American adults now own.