What is random access memory?

Random access memory (RAM) is a type of computer memory used to store data that can be accessed quickly. It is also known as dynamic random access memory (DRAM) and is used to store the instructions and data for a computer's operating system and applications. RAM is volatile memory, meaning it will lose its data if the power is turned off. It is also much faster than other types of memory such as hard disk drives and solid state drives.