Random-Access Memory
When a computer starts up, it begins to load information from the hard disk into its working memory.
This working memory, called random-access memory (RAM), can transfer data much faster than the hard
disk. Any program that you are running on the computer is loaded into RAM for processing. In order for
a computer to work effectively, some minimal amount of RAM must be installed. In most cases, adding
more RAM will allow the computer to run faster. Another characteristic of RAM is that it is “volatile.”
This means that it can store data as long as it is receiving power; when the computer is turned off, any data
stored in RAM is lost.
RAM is generally installed in a personal computer through
the use of a dual-inline memory module (DIMM). The
type of DIMM accepted into a computer is dependent upon
the motherboard. As described by Moore’s Law, the
amount of memory and speeds of DIMMs have increased
dramatically over the years.