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.
This price of $650 makes sense since a new computer can be found for as little as $250, but can also go all the way into the thousands of dollars. In this study, ComputerTooSlow.com also found that the average cost of a Mac computer was much higher. The study showed that Mac users spent an average of $1050 on a new computer. Apple doesn't offer many low-end choices when it comes to their computer selection.