using a palm-sized unit called a mouse. >> it was the first time that a machine was versatile. it was simple. it was friendly. >> it took the computer out of the exclusive domain of geeks and nerds and people who had memorized the commands and put it on the desk of everything. untrained, non-technical people. >> stores around the country put them on sale today, and analyst say it's a good bet that mcintosh could soon be the biggest apple of the industry's eye. >> it's got its form, eventually i want to be able to carry my mac around with me, walk around with it in my pocket. >> you really like that mac. would you trade it for an ibm? >> are you kiddin'? >> as material sciences progress, more and more circuitry keeps getting put on smaller and smaller chips, circuit boards. so the closer together elements on a chip are, the faster motion of signals between them. there's something called moore's law, named for gordon moore.