The Great Symbian

Computer programs must be in main memory (also called random-access memory or RAM) to be executed. Main memory is the only large storage area(millions to billions of bytes) that the processor can access directly. It is implemented in a semiconductor technology called dynamic random-access memory (DRAM), which forms an array of memory words. Each word has its own address. Interaction is achieved through a sequence of load or store instructions to specific memory addresses. The load instruction moves the content of a register to main memory. Aside from explicit loads and stores, the CPU automatically loads instructions from main memory for execution.