1 The hard disk has a small arm that can move from ring to ring on the surface of the disk. To reach a particular sector, the hard disk moves the arm to the right ring and waits for the sector to spin into position.  Hard disks are slow in computer terms.
Chester William Nimitz, Sr. (/ËnÉªmÉªts/; February 24, 1885 â February 20, 1966) was a fleet admiral of the United States Navy.
Two federal highway routes, U.S. Route 13 and U.S. Route 322, also run through Chester. U.S. Rt. 13 enters Chester from Trainer on W. 4th Street, becomes part of Highland Avenue between W. 4th St. and W. 9th Street, and then continues on 9th Street to Morton Avenue. U.S. Rt. 13 follows Morton Avenue in the city's Sun Village section until it crosses Ridley Creek and becomes Chester Pike in Eddystone.