What is RAM (Random Access Memory)?
Actually, RAM is a volatile memory that the computer uses to store program and data temporarily for execution. Volatile means that it is not permanent and can be change. It need power supply to keep the data stored in it. All programs, instructions, and data must be stored in system memory (RAM) before the computer can use it. It will hold recently used programs, instructions, and data in memory if there is room. The more memory (capacity) in a PC, the more data can hold and the better your computer will perform. If your computer doesn’t have enough memory installed, its CPU must constantly retrieve data from permanent storage (hard disk). This method of data retrieval is slower than retrieving instructions and data from memory. In fact, if your PC doesn’t have enough memory, some programs will run very slowly (or you might experience system crashes), and other programs won’t run at all!
