What's main memory ?

Main memory, also known as primary memory or RAM (Random Access Memory), is the main storage area in a computer where data is temporarily stored for processing. It is a volatile memory, meaning that it requires power to maintain the stored information. Main memory is used by the computer's processor to store and access data and instructions quickly while the computer is running. It is much faster than secondary storage devices such as hard drives or SSDs, but has a limited capacity and loses its contents when the computer is turned off.

Main memory, also known as primary memory or random access memory (RAM), is the part of a computer system that holds the instructions and data currently being processed by the central processing unit (CPU). It is a high-speed, volatile memory that stores programs and data temporarily while the computer is running. The main memory is divided into small units called cells, each of which is capable of storing a single bit of data. The CPU can access any cell in the main memory directly, without having to search through the entire memory sequentially.

The size of the main memory determines how many programs and data can be run simultaneously on a computer. A larger main memory allows for more efficient multitasking and quicker access to data. However, main memory is also more expensive than other types of storage, such as hard disk drives, so the size of the main memory is often limited by cost considerations.

Main memory is an essential component of a computer system, providing the high-speed access to data and instructions needed for efficient processing. It is crucial for the overall performance and functionality of a computer.