Business simulations let you fake you are a tycoon, raking in cash, investing rigorously, and watching your empire develop! Xerox PARC physicist Gary Starkweather realizes in 1967 that exposing a duplicate machine’s light-sensitive drum to a paper authentic is not the one technique to create an image. A pc might write” it with a laser instead. Xerox wasn’t involved. So in 1971, Starkweather transferred to Xerox Palo Alto Analysis Center (PARC), away from company oversight. Within a 12 months, he had constructed the world’s first laser printer, launching a brand new era in computer printing, generating billions of dollars in income for Xerox. The laser printer was used with PARC’s Alto laptop, and was commercialized as the Xerox 9700.
Refinements have included putting multiple platters—10 or more—in a single disk drive, with a pair of R/W heads for the two surfaces of every platter so as to increase storage and data transfer rates. Even greater positive factors have resulted from bettering management of the radial motion of the disk arm from monitor to track, resulting in denser distribution of knowledge on the disk. By 2002 such densities had reached over 8,000 tracks per centimetre (20,000 tracks per inch), and a platter the diameter of a coin could hold over a gigabyte of knowledge. In 2002 an 80-gigabyte disk value about $200—only one ten-millionth of the 1955 cost and representing an annual decline of practically 30 percent, much like the decline within the value of essential reminiscence.
applies here. Suppose we … Read More