Memory

The memory (or RAM, for "Random Access Memory) the computer is the
where is the microprocessor and stores data for its calculations, and programs, which indicate operations to be performed.
The RAM is in the form of "strips" (see image below)
representing a certain amount of memory. A machine can accept between one and four bars. To run a process, it is necessary that the program associated with it and data corresponding to it are "loaded" in memory, that is to say they are copied from the media where they are stored when the computer is off, to memory.

• When you have several applications open at the same time, wethat for each of them, such information is loaded into memorywhen the application is executed.
• The operating system of a computer consists of a set of process, also executed by the microprocessor, and thus occupy also the memory space.

If your computer does not have enough memory to store all programs and all associated data, your computer may use a storage medium (usually hard drive) to store temporarily
information it does not serve any time. Whenever he has to perform an operation in which information is stored in this temporary space, it must therefore exchange data with others, located memory.