Definition – What does RAM mean?
RAM (Random Access Memory) is a computer data storage device that stores data and machine code currently being used. The device enables data items to be read or written in the same amount of time regardless of the physical location of data. This type of memory is unstable, and all information that was stored in RAM is lost when the computer is powered off. While ROM is a non-volatile memory and holds all the data permanently when turned off.
Glossary Web explains RAM
There are two different types of RAM such as Dynamic RAM and Static RAM. The RAM mostly used in a personal computer is Dynamic RAM, and all dynamic RAM chips on DIMMs or RIMMs have to refresh every few milliseconds by rewriting the data to the module. Dynamic RAM is a memory that needs refreshing, and the refreshing is done by a memory controller that is part of the chipset on the motherboard.
Static RAM is a volatile memory and is used in cache memory and registers because it is must faster and does not require refreshing like DRAM. SRAM retains information and is able to manage at higher speed compared to Dynamic RAM. The DRAM is much cheaper than SRAM and common to see personal computer manufacturer use DRAM.