Computer - Memory (Physical memory)


Memory is synonymous with the term primary storage

Technically, memory is not part of the CPU but is the memory that the processor (CPU) addresses on its bus.

Memory is a storage device that stores information in the form of byte.

Physical memory is organized as a sequence of:

Each byte (or word) is assigned a unique address, called a physical address. The total number of address is called an address space.

Memory consists of many cells. Each cell is a byte with its address number to access it.

Memory stores two logical type of bytes:

Memory in a Von Neumann machine does not distinguish between which bytes are data and which bytes are software instructions. (ie memory is schema less). A CPU will execute data byte if such bytes represents valid instructions.

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