Pressure Ulcer Deï¬nition Localized injury to the skin and /orunderlying tissue usually over a bonyprominence, as a result of pressure, orpressure in combination with shearand/or friction.
1 The 2.4GHz MacBook with 2GB of memory is available for about $1,000.  Apple's ultraportable laptop, the MacBook Air, is aimed at business travelers. The 1.6 or 1.86GHz processor is slower than a MacBook but what it loses in power it gains in portability.
1 With plenty of expansion options, a Mac Pro equipped with 8-core processor, 6GB memory and Mac's fastest graphics will cost about $3,300 without a monitor. With a 24-inch flat-panel Apple monitor expect to pay about $4,200.  Apple's general-purpose laptop, the MacBook, ranges in price from about $1,000 to $2,800.