Check the article link for more historical details and a PC launch video
Most people in the Western world walk around with a powerful computer in their pocket or purse, otherwise known as a smartphone. It's not unusual to see someone clutching a legal pad-size gadget on airplane flights, such as aniPad, to read books. It's nearly impossible to walk into a coffee shop without finding someone pecking away at a trim notebook computer, checking e-mail and surfing the Web.
One of the original marketing photos for the IBM 5150, the landmark personal computer that ushered in the PC revolution
The lineage of all those devices, in one way or another, flows directly back to a press conference some 30 years ago tomorrow. On August 12, 1981, IBM rented out a ballroom at the elegant Waldorf Astoria Hotel in New York and introduced its landmark 5150 personal computer.