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Muistiosoitteissa refers to memory addresses in computing. A memory address is a unique identifier assigned to each location within a computer's memory. These addresses allow the processor to access and manipulate data stored in RAM (Random Access Memory). Think of memory addresses like house numbers on a street, where each house represents a block of data and the number is its specific location.

When a program runs, it requests specific data or instructions from memory. The processor uses the memory address to find the exact location of that data. These addresses are typically represented in hexadecimal format, which is a base-16 numbering system. This hexadecimal representation is more convenient for humans to read than the raw binary numbers that the computer actually uses.

The operating system plays a crucial role in managing memory addresses. It allocates addresses to different processes and ensures that they do not interfere with each other. This process, known as memory management, is vital for the stable and efficient operation of a computer system. Without a proper system of memory addresses, programs would not be able to locate and utilize the data they need, leading to system crashes and errors. Understanding memory addresses is fundamental to comprehending how computers store and process information.