About 9% of the population is believed to misuse opiates over the course of their lifetime, including illegal drugs like heroin and prescription pain medications such as Oxycontin. These drugs can cause physical dependence. This means that a person relies on the drug to prevent symptoms of withdrawal. Over time, greater amounts of the drug become necessary to produce the same effect (drug tolerance).
Virtual memory is a feature of an operating system (OS) that allows a computer to compensate for shortages of physical memory by temporarily transferring pages of data from random access memory (RAM) to disk storage. Download this free guide.
1 Right click on My Computer and choose Properties . 2  Click the Advanced tab and choose Settings under the Performance option. 3  Under the Performance options window, choose the Advance tab and click Change under the Virtual Memory section at the bottom of the window.irtual memory is defined as simulated RAM. When all the physical memory in the computer has been consumed or used up, the computer will automatically shift the necessary data to a temporary empty space on the hard drive. The pieces of data are swapped to the hard drive and moved back to the RAM as needed.