RAM is the main working memory of a computer. It temporarily holds the operating system, running applications, and data currently being processed. More RAM allows more programs to run simultaneously without slowing down.
Key points
RAM holds the operating system, running applications, and open documents/data.
It is volatile — all contents are lost when the computer is turned off or loses power.
RAM is much faster than secondary storage, allowing the CPU to quickly access the data it needs.
More RAM means more programs and data can be held simultaneously, reducing the need for virtual memory.
Exam Tip:When programs are closed, their data is overwritten in RAM by other tasks — RAM is constantly being read and written to.
Exam Tip:For context questions (e.g. 'Give two examples of data stored in RAM for a smart TV'), be SPECIFIC. E.g. 'the currently open web browser' or 'the video currently being watched' — NOT just 'apps' or 'Netflix'.