RAM

RAM is an acronym for random-access memory and is a form of computer data storage for which the order of access to different locations does not affect the speed of access. It is the most common computer memory which can be used by programs to perform necessary tasks while the computer is on. An integrated circuit memory chip allows information to be stored or accessed in any order and all storage locations are equally accessible.
The word RAM is mostly associated with volatile types of memory (such as DRAM memory modules), where the information is lost after the power is switched off.

RAM is very important for the performance of a computer system.

If a computer becomes low on RAM during intensive application cycles, it can perform an operation known as swapping by using hard drive space temporarily as additional memory. Constant swapping lowers the overall system performance and it is recommended to upgrade the RAM modules to speed up the system.

In many modern personal computers, the RAM comes in an easily upgradable form of modules called memory modules or DRAM modules about the size of a few sticks of chewing gum. These can quickly be replaced should they become damaged or too small for current purposes.